hi i got toyo proxies for my itr i was wondering what psi should deflate them too, street and drag strip?

 

Which tire? You're not running the RA-1 on the street, are you?

 

Which proxes? T1-S or RA-1? Big difference.

 

i believe its the RA-1

 

Don't use the RA-1 for drag racing - the sidewall is much too stiff.

If you must - try low pressures like 22-24 psi at the strip.

I wouldn't use them on the street - that's a waste - the compound is too soft (excessive wear) and you never get them up to temperature enough for them to achieve maximum grip.

At the track it usually takes 5 minutes of VERY HARD driving to get any heat into them. Once the tires are hot - they stick like glue.

I would try a drag radial if you're into going to the strip - otherwise try tires with softer sidewalls - not R compounds.