Acura recommended that I call Yokohama with my inquiry and concern for the over exposed wheels on this car and they recommend the 255's over the 235' all day... I think Acura should help pay for this tire.

I'm calling Acura back today!

 

I'm on my 3rd set of Yoko's Avid H 4's. Because of the heat in Florida, I keep them for 3 years and chuck em. I also change the car battery every 3 years. Heat is worse then cold on a battery.

Yoko knows their stuff. I've ben dealing with a women at Yoko for the past 9 years. They have great customer service and stand behind their product.
She did me a few favors over the years. I chucked the crap Bridestone's that came with my Maxima , 9 years ago. I used them for about a year. CRAP !

Cypwood

 

Yokohama doesn't build cars, they build and sell tires. Does it surprise you that they recommend the largest tire that will fit? Yoko specs the 235/40/18 ES100 on an 18x8.5 rim. So does every other manufacturer I checked when I bought my tires.
http://www.yokohamatire.com/pdf/avses100.pdf

 

Happy Camper Over Here :d

 

bigger tire width = heavier tire = decreased accelerating performance

bigger tire width also = more protection for rim

you judge what is more important for you.. i wanted the performance over protection

 

Less performance? 1 lb for each corner?

 

Tires are unsprung weight. A minor increase can make a difference.

A four pound increase in sprung weight would be negligible.

I see you have 255s . . .

 

Acura recommended that I call Yokohama with my inquiry and concern for the over exposed wheels on this car and they recommend the 255's over the 235' all day... I think Acura should help pay for this tire.

I'm calling Acura back today! :rocketwho

 

yes, even the 2003 maxima's with Bridgestone's Potenza's are HORRIBLE..

I am getting ready to get new tires, and I think I'm going to go with Dunlop SP5000 245/45WR17's

I put the Dunlop SP5000s 205/50ZR15's (in different sizes) on my 1998 Sentra SE (with the sr20de motor) and I put them on my 1998 Maxima (they were 16's on the '98 Max)

They were much quieter than stock, and handled WAY better than the tires I replaced...

-vq

 

Ok so my car should be coming in very very soon and I brought the car with the A-spec package , I have been waiting since end of Jan. I have the 18" OEM rims so what size tires do you guys recommend? 255/40/18 255/45/18 or what. Please give me some feedback. And tell me what you guys/girls have?

 

I just ordered the 18s with 235/40/18s.

If you go 255s, you may need to go lower profile than with 235s, probably 255/35s, if you want to maintain the correct overall diameter.

 

If I were going to be getting the car or wheels for the first time. I would not accept the car with the YOKO's 235/40/18's IMO these tires are too narrow and the wheels rub on everything and anything. I would require that the dealer put on 255/40/18's some ppl on here are concerned about speedometer consequence's... Result will be that when you your speedometer reads 65 you will actually be traveling at 66 and 1/4 I think it is inconsequential considering the wider tire benefits.

Jazzpicker's comment's to Novice, I think he is right on...

Novice, the wheels/tires should be designed to offer a ceratain degree of protection against a common circumstance, rubbing your tires against a curb without it costing you a few hundred dollars... How many times have you scraped a curb in other cars and only had a small brushed mark on your tire?
Hell yes, Acura should find a fix for this problem.

Dano wrote below when someone pointed out less performance with the 255's he's had on his car for a while.

Dano wrote: 'Less performance with 255's? 1 lb for each corner?'


I would demand a better combo as I am now, but most certainly before you take delivery!!!!

 

It turns out that even if the dealer and Acura Customer Service wanted to help a customer get different tires their hands are tied right now. Because Acura has only tested the car with the 235s they can not recommend nor will they participate in any type of tire swap...

As for the warranty with 255/40/18's Acura said there should be no problem because the tire circumference is the same and 255s are just a little wider plus most tire manufactures show the 255's to be fine for this car. Now if you want to go with a taller tire at all... that's a different story... for now it can void your warranty.

Explanation was that the computer is set to detect a certain amount of rotation at turns and such to provide safety with ABS/Stability control and putting on a tire with a different circumference can mess that up somehow... you know what I know... Good luck

 

So why don't I get 245's ... That would be better then 235's and they are not as big as 255's. What do you think ??

 

I dont believe this to be true..

255/40 should be close to the rolling diameter as 235/40 255 is the width not the height.. 40/35 affect the rolling diameter

 

The first number in a tire size is the tires width in millimeters so the 255/40-18 tire has a width of 255 millimeters.

The second number is the aspect ratio. This is a ratio of sidewall height to width. So the 40 is not a millimeter measurement. If you compare a 255/40-18 to a 235/40-18 the sidewall of the 255/40-18 will be taller than the 235/40-18.

The speedo will be off becuse the revolutions per mile for a 235/40-18 will be approx 820 vs 798 for the 255/40-18. I used the Bridgestone Potenza S-03 Pole Position as a reference. The Speedo of the car will record less mileage (about 3-4%) with the taller tire (255/40-18) while going the same distance as the 235/40-18

 

235/45/17 stockers

sidewall 4.2"
radius 12.7"
diameter 25.3"
circum 79.6"
revs/mi 796.0

255/35/19 stockers

sidewall 3.5"
radius 13"
diameter 26"
circum 81.8"
revs/mi 775.0

2.8% too slow or when you speed reads 60mph you are actually going 61.7mph

I CAN LIVE WIT THAT homeys

 

just for kicks.. for 235/45/17 compared to what I have 245/35/19

its 1.7% too slow or when your speedo reads 60mph you are actually going 61 of which i can also live with fo sheezy!

wish I went with 255's.. wow that would have been SWEET!

 

How off would 245/40/18's be?

sidewall 3.85"
radius 12.9"
diameter 25.7"
circum 80.73"
revs/mi " ? "

Help me out with the revs/mi and what percent I would be off would ya?

Thanks!

 

Yep, that is correct or another way of looking at it is that your odometer will read 36000 but you really went 37000.

 

sweet!

by the way how did you calculate that?

 

Jcxny:

IMO you can call some reputable tire stores around town. An independent quoted me a much better price than Discount Tire by FAR... Anyway, call and ask if they will give you some credit on your "pull-off" tires towards the tires you want. Your 245s over 255s question will be better answered by you calling the tire 1800 number and as well as by the tire shop, you could make some comparison's there about how you want your tire to look...

I've been doing some research on tires... Consumer Reports recommends Goodyear eagle F1's as number one, but I've heard several concerns about those from various sources... Their number two TOYO's are intriquing me right now... I'm looking into the Toyo Proxes T1-S - 255/40ZR17 - BW

I did this swap for my 04 Yukon XL and saved $241. compared to Discount Tire. Most shops will allow the same price with up to 2000 miles on the pull off tires... Best of Luck!

 

You guys are idiots! :tflamer: or apparently not very mature. Acura's not about to set you up with any different tire sizes than they've tested with. If Acura provides the tire, it's factory spec ONLY. If you WANT the larger tires, then go spend your money on them. Don't EXPECT Acura to subsidize you like your daddy does. They are not related to you...

 

Proxes T1-S are AWESOME tires, I had them on my other car and I cannot say enough good things abou them.. expensive tire though and the tread is average at best,.. but for performance and quality the T1-s is up there.

 

Thankfully, its truth is not a function of your belief. :toothless

Seriously, I fully understand tire nomenclature.

As has been posted above, the aspect ratio (40) is the height of the sidewall expressed as a ratio or percentage of the width.

Thus, a 235/40 has a sidewall height equal to .4 x 235. For overall diameter you need to add the wheel diameter and two sidewalls.

And, if you increase the width and leave the aspect ratio constant, such as when you go from 235/40 to 255/40, you increase the sidewall height and thus increase the overall diameter.

That is all I was trying to say.

 

We'r not all idiots! This is a process and we're all interested in learning from each other. Perhaps if you'd read the entire thread you would have noticed this enty that already pointed out the Acura can't help replace tires... for now... take it easy NDA, best of luck to ya.

Earlier post:
It turns out that even if the dealer and Acura Customer Service wanted to help a customer get different tires their hands are tied right now. Because Acura has only tested the car with the 235s they can not recommend nor will they participate in any type of tire swap...

As for the warranty with 255/40/18's Acura said there should be no problem because the tire circumference is the same and 255s are just a little wider plus most tire manufactures show the 255's to be fine for this car. Now if you want to go with a taller tire at all... that's a different story... for now it can void your warranty.

Explanation was that the computer is set to detect a certain amount of rotation at turns and such to provide safety with ABS/Stability control and putting on a tire with a different circumference can mess that up somehow... you know what I know... Good luck

 

Let's assume the wider tire is a hefty 2 lbs more per tire. That's 8 lbs total of unsprung weight.

If you can see an improvement in acceleration because of 8 less pounds on a 3500+ lb car, you, my sir, have a very well calibrated puckerometer.

I'd be more apt to believe that you would see an increase in overall performance with the marginally wider tires because of an increase in grip.

 

235 --> 255 is more than 1 lb in each corner buddy... try 3 to 4lbs... call tirerack.com .. they'll tell you if you don't trust me.

 

off tirerack.com

Width x Aspect Ratio = Section Height x 2 = Combined Section Height + Wheel Diameter = Tire Diameter
Example...185/60R14 85H or 185/60HR14

185mm x .60=111mm x 2=222mm + 355.6mm(14")= 577.6mm or 22.74"

 

IMO you can call some reputable tire stores around town. An independent quoted me a much better price than Discount Tire by FAR... Anyway, call and ask if they will give you some credit on your "pull-off" tires towards the tires you want. Your 245s over 255s question will be better answered by you calling the tire 1800 number and as well as by the tire shop, you could make some comparison's there about how you want your tire to look...

I've been doing some research on tires... Consumer Reports recommends Goodyear eagle F1's as number one, but I've heard several concerns about those from various sources... Their number two TOYO's are intriquing me right now... I'm looking into the Toyo Proxes T1-S - 255/40ZR17 - BW

I did this swap for my 04 Yukon XL and saved $241. compared to Discount Tire. Most shops will allow the same price with up to 2000 miles on the pull off tires... Best of Luck!

 

Folks . . .

Unsprung weight and sprung weight are very different things.

A minor increase in the former is far more significant than a minor increase in the latter.

 

I had two 245/40/18's mounted on my A-Spec 18's and they only provided 1/4" over the rim when a straight edge was laid acrossed the tire. I am waiting now on two 255/40/18's to mount on the other two, so I can test fit them on the car and decide which size to go with.

 

vclune, I would be very interested in what you find!

 

I have the A-SPEC kit with the 18" rims and the 235/40/18 Yokos. While I agree that a wider tire would offer better rim protection and I may put on 245 or 255/40/18's when my current tires wear out, I always use the mirror tilt down when parallel parking. This very useful feature assures me that I'm not going to be scraping the curb with my beautiful wheels, that so far are unblemished. I can't recommend it strongly enough!

 

Why stop at 255's? I hear 265/35 will fit. Perhaps the fenders can be rolled to accomodate 275's...

Am I being too subtle?

 

I agree with that, I am just as careful not to scrape my tires on all my vehicles and the tilt down feature is great. I would be trying to maximize the tire size regardless of the rim protection, but it is a factor evryone seems to be concerned with.

 

Easy there, just checking my options of what I think looks the best. I have seen the 235's and IMO I don't care for that look. 245's look pretty good and I would like to see what the 255's look like before deciding. If other sizes were an option I may consider, but I think one of these will do.

 

The A-Spec wheel/tire setup is very aggressive. IMHO, an 18x8.5" wheel is not ideal for everyone, and adding 255 and 265 series tires to 'make it work' leads to other compromises - more rolling resistance, more unsprung weight, less tire selection, and higher tire cost. It gets to the point where you have to ask "Does an 18X8 wheel with a 235/40 tire meet my requirements better?"

 

Cool, that makes sense.

 

Many Toyo ultra high-performance tires feature a specially-designed protruding ridge along the circumference of the tire.

This ridge extends beyond the width of the wheel rim and acts as a bumper to protect the wheel from scratches and other damage. In other words, the tire ridge, not the expensive wheel, hits the curb. Check out the web page below:

http://www.toyo.com/toyo_technology/index_frame.html