Correct Tire Pressure for 18'' A-Spec Rims

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Old 06-09-2006, 01:22 PM
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Correct Tire Pressure for 18'' A-Spec Rims

Does anyone know what the correct tire pressure is for the 18'' A-Spec rims?

I know that for the standard stock 06 rims on a manual, the front two tires are 39 PSI and the back two are 36 PSI.

I went to the Acura dealership and they said that for 18'' A-Spec rims, the correct tire pressure is 36 PSI all the way around.

Does that sound right?
Old 06-09-2006, 01:29 PM
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i have 35 front and 32 rear on my sticker where you open the door.
Old 06-09-2006, 03:49 PM
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On my 19s i'm putting 38-40s up front and 32-35s in the rear
Old 06-09-2006, 04:24 PM
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Originally Posted by EternaLlx
i have 35 front and 32 rear on my sticker where you open the door.
My door sticker for the A-Spec is 39psi in front and 36 in the rear?
Old 06-09-2006, 07:55 PM
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Originally Posted by 05TLTony
My door sticker for the A-Spec is 39psi in front and 36 in the rear?
Just received a set of A-Spec Hyber Black rims from Curry Acura and each wheel came with a sticker indicating the same (39psi front / 36psi rear).
Old 06-10-2006, 02:01 PM
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Originally Posted by dezzzmond
On my 19s i'm putting 38-40s up front and 32-35s in the rear
I have 19's and never really thought about the tire pressure. I've always gone by what's on the door (35 front / 32 rears). Should I be increasing the tire pressure???
Old 06-11-2006, 07:37 PM
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Originally Posted by apnorm
I have 19's and never really thought about the tire pressure. I've always gone by what's on the door (35 front / 32 rears). Should I be increasing the tire pressure???
Was there no documentation with your wheels? Generally shorter sidewall = higher pressure.
Old 06-11-2006, 09:02 PM
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Originally Posted by 05TLTony
My door sticker for the A-Spec is 39psi in front and 36 in the rear?
Yep...I have had too many damn A-Spec rims (bent rims) that I have a million of those tire pressure stickers around here.....and yes....this is correct!
Old 06-12-2006, 09:53 AM
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Okay so the correct tire pressure is 39's in the front and 36's in the rear. Correct?

It's weird that some people have 35's in the front and 32's in the rear listed on a sticker in their door. Why would Acura recommend different pressures for the same kind of wheels?

Thanks for all the help everyone!
Old 06-12-2006, 10:06 AM
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Originally Posted by slimmyjimmy
Okay so the correct tire pressure is 39's in the front and 36's in the rear. Correct?

It's weird that some people have 35's in the front and 32's in the rear listed on a sticker in their door. Why would Acura recommend different pressures for the same kind of wheels?

Thanks for all the help everyone!
That was probably for the OEM 17" wheels? Just guessing.
Old 06-12-2006, 10:09 AM
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It's weird because the TL owner's manual says that for stock 17's, the correct tire pressure is 37's in the front and 34's in the rear for a 6 speed manual. The pressures are different for an Auto.

Gosh, what's with all these different tire pressure readings!
Old 06-12-2006, 10:24 AM
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Originally Posted by slimmyjimmy
It's weird that some people have 35's in the front and 32's in the rear listed on a sticker in their door. Why would Acura recommend different pressures for the same kind of wheels?
That might have been the recommended pressure for the A-spec wheels on the 2004 TL as they were wider (8.5" vs. 8"). Just guessing.
Old 06-12-2006, 11:14 AM
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The 19's should have at least 40PSI
Old 06-12-2006, 02:29 PM
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I know for high speed driving, i.e. road trips, you'd want to have higher PSI. It just depends on the road conditions and tire brand/type/speed rating. MPG is also affected by PSI levels. I recommend higher PSI in the front than the rear on the 6MT. I've been playing with PSI levels after getting my 19's I'll have to see what works best.

Remember some tire shops / lube places don't know better, they put 35s all around.
Old 06-14-2006, 09:21 AM
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Originally Posted by dezzzmond
I know for high speed driving, i.e. road trips, you'd want to have higher PSI. It just depends on the road conditions and tire brand/type/speed rating. MPG is also affected by PSI levels. I recommend higher PSI in the front than the rear on the 6MT. I've been playing with PSI levels after getting my 19's I'll have to see what works best.

Remember some tire shops / lube places don't know better, they put 35s all around.
True dat! Thanks Dezz.

I just experimented by putting 39's in the front and 36's in the rear and the ride is perfect.

Awesome!
Old 06-16-2006, 10:32 PM
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Originally Posted by enormus
Was there no documentation with your wheels? Generally shorter sidewall = higher pressure.
I don't recall seeing any. Their RonJon wheels so I'll check with him!
Old 07-03-2006, 09:02 AM
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I'd assume that RonJon wheels have different tire pressures than the A-Spec ones. By the way, those RonJon's are pretty sweet
Old 07-03-2006, 03:12 PM
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OEM 17" is supposed to be 32PSI all around...
Old 07-04-2006, 02:50 PM
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Originally Posted by TLTrance
OEM 17" is supposed to be 32PSI all around...
That's right. I think it says those pressures in the manual as well as in the side door area.
Old 07-04-2006, 02:59 PM
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Dealer and private mechanic recommends...

I notice when I bought my 06 TL, the pressure reading was 41 all around. I thought that was excessive since the door jamb recommended much lower psi. The salesman told me they must know what they're doing, the mechanics put 41 psi all around.

One day I got a nail out of my tire at a local garage. The mechanic said he recommends reading the max. psi off the sidewall and put about three pounds less than what is stated on the sidewalls. Sure enough, it was 41 psi.

Two different opinions both say 41. I get better gas mileage, a slightly stiffer ride, but you get used to it. The mechanic said that tires last longer at the higher psi.
Old 07-04-2006, 03:32 PM
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Originally Posted by TLTrance
OEM 17" is supposed to be 32PSI all around...
That is correct for automatic transmission TLs. 6MTs have a higher recommended front tire pressure, which I think is 35 lbs.

Originally Posted by slimmyjimmy
I think it says those pressures in the manual as well as in the side door area.
Yes, the last page of my 2005 owner's manual, opposite the back cover, has the various recommended tire pressures as well.

Originally Posted by bobbyk2006
Two different opinions both say 41. I get better gas mileage, a slightly stiffer ride, but you get used to it. The mechanic said that tires last longer at the higher psi.
The factory recommended pressures try to optimize ride and mileage. I assume the different recommended front pressures for the 5A and 6MT are to reduce understeer in the 6MT, as does the different rear anti-roll bars, for the performance-oriented drivers who are more likely to get the 6MT rather than the 5A.
Higher than recommended pressures will reduce ride "quality" (or increase ride stiffness) and stiffen the tire sidewalls, which is good for tire wear and vehicle control, but reduces tire tolerance for impacts by decreasing tire flex.
Old 07-07-2006, 03:03 AM
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Originally Posted by enormus
Just received a set of A-Spec Hyber Black rims from Curry Acura and each wheel came with a sticker indicating the same (39psi front / 36psi rear).
Hey i didnt look back on this thread till now but 39/36 huh...

am gonna go check wat tires that sticker on my door is for when i get up today.. its 4 am and am not sleepy.. took too long of a nap
Old 07-07-2006, 01:01 PM
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I just checked my sticker and it indeed is for the A-spec tires and it says 35 front 32 back.......... hmmmmm? I have a 06 6MT
Old 07-07-2006, 11:48 PM
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Talking 40 Psi

I run 40 PSI all around. I am a very spirited driver - I like the way the car rides. I will try 39 up front and 36 in the back to see how it feels.
Old 07-13-2006, 10:44 AM
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So wait....is it 35 front/32 rear or is it 39 front/36 rear?

Does it matter which pressure combo from the two I choose? I'm assuming the ride will feel a bit different for both.
Old 07-13-2006, 01:45 PM
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Whatever you feel comfy with...

Originally Posted by slimmyjimmy
So wait....is it 35 front/32 rear or is it 39 front/36 rear?

Does it matter which pressure combo from the two I choose? I'm assuming the ride will feel a bit different for both.
Whichever you like better; either should work fine.
Lower pressure may result in softer ride, but lower gas mileage and maybe slightly more tire wear. Higher pressure will result in minor MPG improvement (no more than 0.5 MPG) while stiffer sidewalls will give better transient response and less tire rollover, but watch for rear-end "twitchiness" at speeds exceeding the legal freeway speed limit.
Don't go over 40 lbs. cold for everyday street driving.
Old 10-30-2006, 09:38 AM
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Originally Posted by Will Y.
Whichever you like better; either should work fine.
Lower pressure may result in softer ride, but lower gas mileage and maybe slightly more tire wear. Higher pressure will result in minor MPG improvement (no more than 0.5 MPG) while stiffer sidewalls will give better transient response and less tire rollover, but watch for rear-end "twitchiness" at speeds exceeding the legal freeway speed limit.
Don't go over 40 lbs. cold for everyday street driving.
Ahhh.....that helps a lot. I've been driving on 35/32 for a while but I recently tried to change it up to 39/36 to try something new. I actually can't tell much of a difference but I do like how the ride feels overall better.

Thanks for the info!
Old 11-01-2006, 04:01 PM
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Crack in wheel. In post-Katrina New Orleans, there is a lot of demolition going on. I happen to have to drive towards the landfills where inevitably nails fall off of the numerous trucks making runs to landfills. One day, my fourth flat I believe, my mechanic couldn't find a nail. He looked around and found the culprit. The aluminum alloy wheel was cracked on the inside of the wheel. I would have probably never found it. I called Acura. At first they were reluctant to replace it, stating it was caused by a road hazard. When I started to complain, they said alright bring it in. They replaced it right away with a brand new wheel, no questions asked. I wonder if keeping my tires inflated at 40 psi contributed to the crack? The higher pressure would give the tire less cushion if I hit a pothole. I just don't know. The problem was discovered after I drove from New Orleans to D.C. and back. So there was a lot of high-speed, high heat-generating driving. Could that have contributed to the crack? I wonder. Anyway, I'm going to change my 40 psi all around to the 39/36 pressure to see how that works. I hope the mileage doesn't drop significantly. I average 32 on the highway. It's a 2006 5M w/ navi.
Old 11-01-2006, 05:39 PM
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Originally Posted by slimmyjimmy
Thanks for the info!
You're welcome. Hope it helps!

Originally Posted by bobbyk2006
The aluminum alloy wheel was cracked on the inside of the wheel.... Anyway, I'm going to change my 40 psi all around to the 39/36 pressure to see how that works. I hope the mileage doesn't drop significantly. I average 32 on the highway. It's a 2006 5M w/ navi.
Sounds like a defective wheel-- impact damage usually affects the tire rather than the wheel, which is why the dealership replaced it after seeing no impact damage to the tire.
You might see an improvement in handling from 39/36 due to reduction in understeer and rear-end sensitivity, compared with 40/40, to make up for any loss in MPG.
I think 39/36 is recommended for the 18" wheels like the A-Specs; recommended psi is a little lower for the stock 17" wheels with the 6M. I like to run 36/33 with my 5A, which is a little above recommended.
Old 11-02-2006, 11:43 AM
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Originally Posted by bobbyk2006
Crack in wheel. In post-Katrina New Orleans, there is a lot of demolition going on. I happen to have to drive towards the landfills where inevitably nails fall off of the numerous trucks making runs to landfills. One day, my fourth flat I believe, my mechanic couldn't find a nail. He looked around and found the culprit. The aluminum alloy wheel was cracked on the inside of the wheel. I would have probably never found it. I called Acura. At first they were reluctant to replace it, stating it was caused by a road hazard. When I started to complain, they said alright bring it in. They replaced it right away with a brand new wheel, no questions asked. I wonder if keeping my tires inflated at 40 psi contributed to the crack? The higher pressure would give the tire less cushion if I hit a pothole. I just don't know. The problem was discovered after I drove from New Orleans to D.C. and back. So there was a lot of high-speed, high heat-generating driving. Could that have contributed to the crack? I wonder. Anyway, I'm going to change my 40 psi all around to the 39/36 pressure to see how that works. I hope the mileage doesn't drop significantly. I average 32 on the highway. It's a 2006 5M w/ navi.
Dang, that sucks. I'm glad it worked out though and Acura actually replaced it. They can be such a pain sometimes
Old 11-03-2006, 02:23 PM
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Originally Posted by bobbyk2006
Crack in wheel. In post-Katrina New Orleans, there is a lot of demolition going on. I happen to have to drive towards the landfills where inevitably nails fall off of the numerous trucks making runs to landfills. One day, my fourth flat I believe, my mechanic couldn't find a nail. He looked around and found the culprit. The aluminum alloy wheel was cracked on the inside of the wheel. I would have probably never found it. I called Acura. At first they were reluctant to replace it, stating it was caused by a road hazard. When I started to complain, they said alright bring it in. They replaced it right away with a brand new wheel, no questions asked. I wonder if keeping my tires inflated at 40 psi contributed to the crack? The higher pressure would give the tire less cushion if I hit a pothole. I just don't know. The problem was discovered after I drove from New Orleans to D.C. and back. So there was a lot of high-speed, high heat-generating driving. Could that have contributed to the crack? I wonder. Anyway, I'm going to change my 40 psi all around to the 39/36 pressure to see how that works. I hope the mileage doesn't drop significantly. I average 32 on the highway. It's a 2006 5M w/ navi.
I meant to say 5A, not 5M. It's an automatic.
Old 11-10-2006, 09:40 AM
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Originally Posted by bobbyk2006
I meant to say 5A, not 5M. It's an automatic.
Yeh, I figured
Old 11-12-2006, 09:46 PM
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the correct way to do it is have 39 psi on the front 36 psi on the rear since the front is heavier .
Old 11-12-2006, 11:05 PM
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For stock 17"...

MT: 35psi front, 32psi rear
AT: 32psi all around
Old 11-13-2006, 10:44 AM
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Originally Posted by Tim L.'s TL
the correct way to do it is have 39 psi on the front 36 psi on the rear since the front is heavier .
Yeh, I found that this combination of tire pressures works the best for 18'' A-Spec rims.
Old 11-26-2006, 12:11 AM
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i have no clue why, but acura changed their specs for 18" tire pressures :

04-05 18" tire pressure on sticker is : 39F 36R
06 18" tire pressure sticker says : 35F 32R

but were talking about the exact same specs wheels (difference of TPMS added but that's all)
Old 11-28-2006, 09:39 AM
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Originally Posted by Type S Zero
i have no clue why, but acura changed their specs for 18" tire pressures :

04-05 18" tire pressure on sticker is : 39F 36R
06 18" tire pressure sticker says : 35F 32R

but were talking about the exact same specs wheels (difference of TPMS added but that's all)
Yeh, I noticed that too on the labels I got with my A-Spec rims. I originally had that setup for a while but I've grown to love the 39/36 setup. I guess like everyone is saying, it's strictly about preference
Old 11-28-2006, 03:14 PM
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Originally Posted by Type S Zero
i have no clue why, but acura changed their specs for 18" tire pressures :

04-05 18" tire pressure on sticker is : 39F 36R
06 18" tire pressure sticker says : 35F 32R

but were talking about the exact same specs wheels (difference of TPMS added but that's all)
I have an 04 ASpec and my door sticker reads 39F 36R.

There may be a difference after 05 because the ASpec rims went from an 8.5" to an 8". Not sure if it was after 04 or after 05 but that may be the reason for the difference in tire pressure standards.
Old 11-28-2006, 03:18 PM
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Originally Posted by bobbyk2006
Crack in wheel. In post-Katrina New Orleans, there is a lot of demolition going on. I happen to have to drive towards the landfills where inevitably nails fall off of the numerous trucks making runs to landfills. One day, my fourth flat I believe, my mechanic couldn't find a nail. He looked around and found the culprit. The aluminum alloy wheel was cracked on the inside of the wheel. I would have probably never found it. I called Acura. At first they were reluctant to replace it, stating it was caused by a road hazard. When I started to complain, they said alright bring it in. They replaced it right away with a brand new wheel, no questions asked. I wonder if keeping my tires inflated at 40 psi contributed to the crack? The higher pressure would give the tire less cushion if I hit a pothole. I just don't know. The problem was discovered after I drove from New Orleans to D.C. and back. So there was a lot of high-speed, high heat-generating driving. Could that have contributed to the crack? I wonder. Anyway, I'm going to change my 40 psi all around to the 39/36 pressure to see how that works. I hope the mileage doesn't drop significantly. I average 32 on the highway. It's a 2006 5M w/ navi.
Lowering your tire pressure reduces the strength of the sidewalls and would allow an impact to compress the sidewalls quicker and allow the impact to hit the rim. If the the tire pressure were higher then the impact would be able to transfer from the tire through to the shocks while protecting the rim. I would never recommend a lower tire pressure with low profile tires.
Old 11-28-2006, 04:17 PM
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Originally Posted by Silver Bullet
I have an 04 ASpec and my door sticker reads 39F 36R.

There may be a difference after 05 because the ASpec rims went from an 8.5" to an 8". Not sure if it was after 04 or after 05 but that may be the reason for the difference in tire pressure standards.
Hmm....I'm pretty sure that this isn't it because the only A-Spec rims that had the 8.5'' offset were the 2004 Gunmetal ones. All the other A-Spec rims had the standard 8'' offset.


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