Tyre pressure

[Gad]

Hi all

Looking for some advice I’m running the following on a 2007 vantage 4.3 V8

Front - 245 / 35 / 20

Rear - 285 / 30 / 20

All Michelin pilot sports 4s

Non standard wheels

What would you recommend the pressures should be standard road use no tracks etc

35 psi ??

Thanks in advance

[Import]

Be interesting to see what comes up..just had my 255/35/20 and 305/35/20 installed..set to standard pressures right now..but willing to play a bit..lol

[Jadatis]

This " pigheaded Dutch selfdeclared tyrepressure specialist" can help you with that.

Need to know specifications of tire, and axleloads in your use. That last is the most tricky part in it all.

If you give me next from tires, I will make you a pressure/axleloadcapacity-list, with build in maximum reserve, but still acceptable comfort and gripp. 

1. Maximum load or loadindex 
2. Kind of tire to determine the maxloadpressure, but if you read AT xxx psi on sidewall, that is what I need.
3. Speedcode, to determine for wich speed the maxload is given by tiremaker. 

Sizes would be nice, and from car GAWR's and GVWR, empty weight. 
Carmakers use GAWR's and max technical carspeed with no reserve, for their recomended pressure. Or yust AT pressure of tires. Your expected 35 psi is maxloadpressure of a standard load P-tire.

Then you " ONLY" have to determine the axleloads 99% accurate, the most tricky part in it all, and your responcibility. Then seach them back in my list, and use that cold pressure

Edited by Jadatis on Friday 21st April 11:35

[Nbgring]

33 psi front and 36 psi rear
You could take the original Aston Martin recommendation from the manual of the Vantage S, which has the same width (245 and 285)