I am soon to have [being shipped right now] new rims. They are 17x7 and I also purchased 215/50/17 Kumho Ecsta ASX. Now what would the correct tire pressure be to run on this tire?

--Thanks
Merry Christmas

 

whatever the tire is rated...

there should be a maximum PSI on the sidewall of the tire. Otherwise anything between 35 and 40 psi should work and be safe. The higher the pressure the stiffer the ride (shouldnt make much difference w/ low profiles) better fuel economy and more responsive handling, even though it wont vary that much since your working with a small margin (5psi between 35 and 40). I would personally run at 40 its a good median between your max psi (probably 44) and what your auto manufacturer suggests (probably 35).

 

I would say run stock tire pressure...

 

stock tire recommendations is 29psi...

 

i run 32-33. works for me on toyo proxes 4.

 

i run a clean 35

 

I'm at about 31ish

 

so the key number seems to be around 30ish. Ill prolly do that PSI then.

 

if you want a smoother ride then go between 30-32 if you want better gas milage but a stiffer ride 35-40psi.

 

Arent those tires too small for 17X7 to keep the same diameter?

 

im running 32 all around

 

no.. i believe that are .3 or .03 of an inch shorter than stock, not that bad and the 235/45/17 were more for 7.5-8" wide rims where as the 215/50/17 are for 6.5-7".