What PSI should I run for my 245/35/19 tires?

 

read the sticker inside your door or your owners manual.

 

Depends on what tires they are...and what you're doing with them.

32-36PSI for street driving for most tires

 

doesn't really matter what size. only thing that changes is the max pressure a tire will hold.

 

I know it's 32 psi for the stock tires (Dunlop SP Sport 8090 225/45/18). I wasn't sure whether I should run the same inflation for my Bridgestone Potenza 245/35/19 tires.

I guess nuke0907 has confirmed my assumption.

Thanks all.

 

Hello, I know better than this, but I just got my car home, I put around 400 miles on it in Seattle and then the first day I had it home. Anyways, I was waxing it up for first time and thought I'd check the tire pressure. Well, I was EXTREMELY dissapointed to find that there was around 50 lbs in all tires!! I put them all around 33-ish. I'm assuming that I didn't do any damage in 400 miles, but it pissed me off that 1. I didn't check it at the dealership (must have been distracted by the shiny new RX! and 2. the dealer ship would air up that far, maybe they didn't tell the high school kid how to work the pump yet. cheers.

 

No appreciable adverse wear over 400 miles @ 50 psi. At least you got better gas mileage, but a harder ride.

Always check tire pressure when they're relatively cold; ambient air, shaded, non-driven for a few hours. Adjust seasonally if your climate varies a good deal.

32 psi is the norm for street use.

 

so did you check the pressure right after you drove the 400mi? if so the tires probably heated up from the drive making the pressure go up. check them again when they are cold.

 

50 PSI!!! Everyone knows more is better!

 

that would not account for a jump from 32 to 50..


on track days my tires jump about 8 to 12 lbs between cold and just off the track.

beers

 

Hey, thanks for the comments. Yeah, I checked the pressure when they were cold and had been sitting all night in my garage, so there were a SOLID 50 psi. And, when I had my RX in Seattle driving around for two days, it was around 90 degrees out and I stretched it around 80 mph, so what do you think the pressure in my tires was then? 70, 80 psi? Anyways, they are down to recommend pressure, but I haven't driven yet, (its raining and I don't want to dirty up my first wax job yet!) so I wonder how it will feel to me, will I notice any difference? cheers

 

driving on the hiway they might gain 5#s of pressure..

and yes you will feel a difference.

beers

 

max pressure should be on the sidewall of the tire. it has max tire pressure on the falkens i have. i think it said around 50 psi.

 

you don't want to fill your tires up to max pressure. the only time that should ever be done is by the tire shop trying to bead the tires. if you fill it up that high and the tire heats up you will blow your tire almost for sure. unless possibly you are using nitrogen.

 

I'm glad you chimed in Nuke. I don't think it will blow the tire, but shouldn't be anywhere close to 50 and I don't care what the make or size is(at least on our car).

Doesn't anyone read the manual, or consult the little stcker on the drivers door? Jeez!

If you are driving around with 50psi cold in your tires.........then you have a lot to learn and should sell the car immediately.

 

yeah, i don't quite think everyone understands it doesn't matter what size/brand of tires you use, you still follow the pressure listed in the manual or the door jamb not the Max listed on the tire.

 

At 50 psi, shouldnt your light come on? Would that be considered too high and the computer throw a tire light at you? I know it will if it gets low but thought it would when too high too. ????

 

Yes, it will at around that number as I recall, but that assumes you have TPMS......and quite a few with aftermarket rims don't have the TPMS. Of course then they should have the light on all the time. And I think Canadian models didn't get TPMS........I can't remember, but I think that's correct. They got headlight washers instead.

 

i recall it is 47psi.

beers

 

my max is 49 ... i run with 38