Toyo R888 tire pressure for motorsports

[Andy69]

The general consensus seems to be 18 PSI for these tires as a starting point. I had it out at the track yesterday and didn't get anywhere near the diamonds, of course I wasn't trying to find the limit as I had my 14 year old with me.

 

If anyone uses these tires for autocross, what pressures do you run? It may very well be 18 psi and I just need to be more aggressive :-)

[fastg]

I run the R888R in 15" rims. My cold pressure setting is 10 front 12 rear. I am not truly comfortable running that low a tire pressure but it's what it likes.

 

Graham

[Andy69]

I run the R888R in 15" rims. My cold pressure setting is 10 front 12 rear. I am not truly comfortable running that low a tire pressure but it's what it likes.

 

Graham

 

wow that's super low.

 

but if that's what enables to you use all the tire surface, it is what it is

[Alfonse]

If I go below 18 psi, the rears wear only on the outside and the outer edges of the rear tires get chewed up on the track. I started at 20, and 18 seems to be the lowest that works for me on 15 inch rims. I have a Birkin without IRS. The tires get plenty of heat into them.

[Andy69]

If the rain holds off, I'll be attending the Arkansas Region autocross on Sunday in Little Rock. I'll do my usual tire pressure dance with the chalk.