Hella-Buggin'

I just got some Yokohama AD08R tires and am looking for some guidance on pressures. Cold pressures for regular street use as well as DE pressures.

I was running Pilot Super Sports and preferred running them a little lower than spec'd on the street at 33/37 cold.

LexVan

Great tires. I'd start at 36/40 and then work down from there to dial in for street. Bleed a pound or 1/2 pound each drive till happy.

Not sure for DE. Probably no more than 40 hot.

Sent from my iPhone using Rennlist

Jake951

Shoot for 32-34 psi hot on the track. These tires have a stiff sidewall and work best at lower pressures than other "street" tires.

Hella-Buggin'

Wow, that's much lower than I would have expected.

Jake951

Read this article: http://www.yokohama.com.au/News-and-...ace-tyres.aspx. They recommend 32-34 psi.

ADias

PAG's tire pressure recs are the same for all tire brands for a given car/tire configuration - all tires should have the same contact patch for a given car. If you like 33/37 on your previous tire, I would try the same values on these tires. And again... cold means 68F, otherwise compensate for T diffs (+1PSI/+10F).

Hella-Buggin'

I also have to compensate + 1lb PSI because I'm at 1100 ft above sea level.


Thanks everyone. This gives me a good starting place that I can adjust to taste.
I'm having a few things doe to the car so I just want a steady base level so I don't have too many variables up in the air.

1990nein

--

ADias

True and modern tires have asymmetric contact patches too. But... PAG tire pressure recs are the same for all brands of supplied tires...

mdrums

With stock alignment and suspension I'd just use the stock pressures of 34/39 for a 997.2 car.

My stock GTS pressures are 34/37 cold..FYI

I have stiffer suspension and some GT3 upgrades and more than stock negative camberso I run more of a GT3 cold pressure with 31/34.

On the track...I've only tracked these tires once and for 1 session. Once they got over 35/36 hot they slide more. So I'd say no more than 34 HOT for best grip...but again that is my car and driving. If you run stock alignment you will need to run higher pressure to keep the side wall from turning under and to keep more tire on the pavement.

Hella-Buggin'

I also upgraded to gt3 Lca's so I'm expecting 1.9 negative camber up front with a more aggressive alignment. I'll start there and bleed down as needed.

Thanks or all the help guys. I think j have a good starting point.

Mark

Hella-Buggin'

Hey Guys,

I just wanted to post an update for future searches. I've done a few DE's on the tires now and am very happy. I've found that for my car running up to 34/38 hot is the sweet spot. Incredible grip but once that threshold is crossed they start getting greasy. It's hard to say where that put's me cold since they get bled down throughout the day and never really sit long enough to get true cold but I'd guess around 27/30.

rs10

What does this mean? If PAG's recommended pressures are 34/37 and it's 78F, the pressures should be 35/38? Or ... ?

Thanks!

gasongasoff

Performing CPR and reviving and old thread.

I just put on a set of AD0R's and was wondering if there were any updates or other folks who want to share their tire pressures? 0r is 34F 38R HOT the general consensus?

gasongasoff

Nobody running AD08R's???