TVR tyre pressure not the usual question....

[alexcurtis]

Hi all

So this is not the usual what tyre pressure should I run my TVR at.

The general view for Toyo T1-R’s is 24psi at the front and 26psi at the back?

I was discussing this with a friend who took issue, and what he said made a lot of sense and the tyre wear that he then showed bore this out. On a front engine Fwd the tyre pressure is always higher at the front than the back, due to weight of the engine and braking, the same for a front engine RWD. The rear tyres are lower as there is less weight and just “roll” along on a fwd, on a rwd they obviously have more to do!

After further thought and discussion can understand why the rears may be higher as if the pressure was low then the torque could start to distort the softer side walls and cause issues of wear and “interesting” handling under acceleration where you need everything to be turning in parallel without any torque twist…

It does not solve the front though which on my Griff 500, you can see the shoulders are wearing and the middle is not suggesting that the tyre is being “lifted”in the middle. Therefore I am considering raising the tyre pressure at the front to 25-26psi to get better adhesion / contact and wear.

Lastly my car was and has just been fully set up camber / caster / toe, with general road set up, at Aline in Dudley, so it is not a geometry issue.

Would welcome people thoughts discussion, I feel like I am missing a blindingly obvious simple answer....

Thanks Al

[alexcurtis]

26 front 24 rear would seem more sensible to me also but the general view and what the handbook says is lower pressure front higher rear...