Penn4S

I have searched both here and on another forum and did not find any consistency so please indulge me. I just replaced OEM Pirellis with new Michelin Pilot Super Sports. 245/20 front 305/20 rears. I have always gone with a lower pressure for comfort and road feel but wanted to check what others were running. I have fronts at 32 and rears at 36. I like the ride so far for the 1st week. Any thoughts.

Slantnose!

Sounds good to me, would never go below 32...

trysixty

cold or up to temp? 32fr/36re feels good when up to temp to me

LexVan

That seems low.

I run 36-37 front. 40-42 rear. I'm not looking for comfort. Only grip. Then, tire wear and MPGs. Comfort last.

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Homeles

Same tires and size. Same pressures cold.

991TurboS

33 front, 36 rear on P-Zeros. Those are the recommended comfort settings. If I replaced the Pirellis with MPSS I would probably go with the manufacturer's ratings on the side of the tire.

findtom

Same for me...

Hurricane

That is what I typically go with as well (daily driver). When I autocross, I run the pressure a little higher, though.

chuck911

There's really no right or wrong, so long as you stay within a very broad range. At the very low end, 28-30, ride will be great, grip will be good but handling/responsiveness will be slow. Also going this low increases your risk of uneven tire wear (more outside wear) and/or wheel damage. At the very high end, 40-42, ride will be harsh, grip good, responsiveness razor sharp. Going this high increases risk of uneven tire wear (more inside wear) but your real risk here is that tire pressure increases with heat and grip falls off fast above 42, so you could find your car skating around losing traction right when you most need it. This happens to track novices a lot.

Now here's the pattern- notice the guys who autocross or just want performance are towards the higher end of the range, the comfort drivers a little lower. Again, there's no right or wrong. You also don't need to run the same balance front to rear. Some like the rears 3 psi higher, you may prefer 4 or 5. Or 2.

The only other thing to keep in mind is the only pressure that matters is the one you're driving on. Pay attention to that, and how the car feels, play around a little, you'll find what you like.

991TurboS

And definitely check the TPMS readout once in a while. It alerted me to a nail I had in the rear passenger tire a couple weeks ago. Had a very slow drop in pressure over time in that one.

eg991

Same here.

Penn4S

My numbers, 32 f and 36 r are cold numbers. Once they warm I am getting reading of 36F and 39R which I am comfortable with. I ran them slightly higher on my TT's but for this car seemed the right zone. Thanks for all the input seems like I'm in the zone of most of you.

chuckbdc

Penn4S those temps with MSS are right on target.

chuck911

Only thing you'll want to watch out for is at 36/39 you are high enough it won't take a lot in the way of faster driving/increased ambient to get into the 40+ zone where the tires start getting hard and losing grip. This happens a lot to guys who buy into the old line of set it cold and leave it alone. Works fine most of the time. Then you go to DE, or autocross, or even just a nice long canyon drive, and suddenly the car is skating around. Pull over, bleed em, carry on.

neurotic

good info. cheers.