mmanuel09

Hey everyone. I got new tires over the weekend and realized last night that the tires were inflated to 43 psi. I was like "What the Hell!" I didn't drive the car over the weekend and driving home yesterday the car felt a little loose. Anyway, I have Toyo Proxes 4 and running 35 psi all around. Is that still to much? What PSI is everyone running on 245/45/17.

CPR

Just got 4 Brand New EL 42's, courtesy of AHC
Door panel/the true reading/ states 32PSI, all around
Auto manufacturer, sets pressure, standards; not the tire company
P.S. the new version EL42, isa much better tire

dsc888

I run my 245s at 35PSI all the way around. Some folks will run 32 in the back to improve rear tire wear and to help the rear stick a little better in agressive cornering. But you can run it at the stock pressure with no problems. 43 PSI is way too much. You will wear out the center of tire quicker and run the risk of punctures more.

dsc888

mmanuel09

Yeah, that's what I'm running now. Its been a couple of days and its getting better. I'm thinking of going down to 34 all the way around to see what that feels like.

Thanks

Inaccurate

Tires = Goodyear Eagle F1 255/40-17 on oem rims.

I been testing many different pressures to see what my new Eagle F1's prefered. These are 255/40's not 245/45's. So, I am trying to get the rear thread to sit flat across the contact patch width. So, I have gone to low pressure in the rear to get the wide 255's to sit flush. After trying different pressures, I found that the handling on the freeway feels great with the rears at the 30 psi COLD instead of the 35 psi COLD. With the rears at 35 psi COLD, the rears were not laying flat across the width of the tire. I think this concave shape made the rears squirmish when I jingled the steering left-and-right at freeway speeds. But, with the 30 COLD on the rears, the rear tracks much better(not squirmish) when doing the same test of jingling the steering left-and-right at freeway speeds.

Tires = Goodyear Eagle F1 255/40-17 0n oem rims

Here is my tire pressure that I feel best fits my situation -

Front
34 set cold
36 mostly seen on MID after tires get warmed up
37 mostly seen on MID after tires get warmed up
38 occasionally hit (max)

Rear
30 set cold
31 mostly seen on MID after tires get warmed up
32 mostly seen on MID after tires get warmed up
33 occasional hit (max)