Hi guys, I was wondering if all 4 tires needs to be the same kpa. Is it an issue if all of them are different by 10kpa or so? Just want to know because my TLX is like that. Thanks!

 

^^ I know that our metric system makes things look worse than it as 10 KPa is ~ 1 PSI so that is not as bad as it appears. You can try and top them all up....I know I am a bit OCD so I would play with the individual tires until all sensors would show the same number but it can be annoying to do

 

Ahh okay..I've never had a car where I can actually monitor the pressure. So at what range of difference should I be worried and pump the tires back up? I use to just rely on the low tire pressure warning.

 

^^ Everyone has their own threshold of what they deem acceptable but for me, I keep my tires at 35 PSI and when they drop to 32 or 33, I top them up.

Keep in mind to check them BEFORE you drive your car and they get warm.

 

Isn't the recommended 32 PSI? I thought we should go pass that unless I'm missing something.

 

^^ Yes it is but I like mine at 35 PSI....If you keep yours at 32 PSI, I wouldn't allow to drop below 30.

 

32 psi is the recommended tire pressure, but lots of owners adjust tire pressure to the liking (comfort and driving style). Some stagger the pressure to help prevent under steer and others will go a little higher psi to help with MPG. You also need to keep in mind ambient environmental temperatures. In other words tire pressure will rise in Summer temps and drop in Winter temps. Typically its 1 PSI for every 10 degrees temp change.

 

Ahh okay.. so what PSI/KPA difference between the tires would I normally need to start balancing the pressure on the all the tires?

 

I wouldn't allow more than a 2-3 PSI difference...

 

Hm okay..think the highest pressure is at 246 right now and the lowest is at 230 so I guess that's still okay? Or maybe I'll fill every other tire up to match 246.

 

Split the difference and go at 235 KPA which is 34 PSI but again, make sure these readings are when the tires are cold!

 

You are fine. For me personally I keep mine at 34 psi / 235 kpa and keep all tires within 1 psi / 7 kpa, but that's me.

**** Edit Weather beat me to it ****

 

gotcha thanks!

 

Why not just follow the recommendation on the label on the door jam. Iirc the front have a higher pressure than the rears.

 

Because like I mentioned folks like to play with the pressures to meet their own needs/tastes. Sort of like modding, but not really.......

 

I seem to recall reading that for my TL Type S, Michelin recommended a 2psi difference between the front and rear (34 front, 32 rear). That is what the dealership set mine at after the 1st A1 service and it seems give added stability in cornering while keeping the ride smooth.

 

The TL is also front wheel drive....
Just like nbp04 has stated twice...lol... You can play with pressure to get exactly what you want from the vehicle and tires. Staggering the pressure on a front wheel drive like the dealers had done for you, helps with under steer

 

Third time is the charm??

 

I wish I could experience it...I usually fall asleep after the second time

 

Haha - maybe you should have you pressure checked

 

^^ I booked a Dr's appoitment...I'll keep you guy's UPdated on the situation.

 

Doesn't your system beep when you reach the correct pressure?

Monitoring is good, but listening to a beep is quite easy to get back to normal. Normal provided you like 32 psi.

Referring to OPs issue not weather's.

 

Jeff at vtec.net felt that the SH-AWD was noticeably better with 39 psi front / 32 psi rear in terms of handling and grip.

The Temple of VTEC - Honda and Acura Enthusiasts Online Forums > TLX > > Re: Driving 2015 SH-AWD TLX this week

 

I dont have a TLX, but I would assume that it works the OPPOSITE of what you've stated.

when the tire pressure reaches lower than the threshold it will beep at you.
and I believe that threshold is set at 30-28lbs.

I want to say MOST CARS operate this way. so, if your TLX operates the opposite of this, it would be really really fucking weird.

 

manipulating tire pressure is all about what you want from your car.




as you can see from the chart, upping the front tire pressure WILL DECREASE UNDERSTEER.

 

^is that the 4th time that it was stated?