No one is in the tire forum, please give input


Okay, I recently got rid of my stock michelins after 33922 miles on my 2003 6spd CL-s. My question is related to psi used in the new Kuhmo ASX 235/35/17 that I got installed today at Discount Tire. The manager did not have an issue offering/ selling this tire size for my car. The car looks real aggressive with this tire size, however I notice on the paperwork that the PSI filled in the new tires is at 27psi all around.

Doesn't it seem to be to low of a psi for our car? What is the rest of the gang that has 235/45 series filling up their tire too? Please help. Thanks in advance

 

some say to fill to stock PSI, as noted on the doorjam but i dont think it applies to non-stock tire size.
I have 225/40/18 and I fill to max or close as noted on the tires. what do your tires say?

 

tire size has nothing to do with PSI. i had a truck with 31x10.5 tires and ran 32#. i run close to max 50# on 235/35R19 now for rim protection but the ride is horrible. i believe you should be running 32 +, no reason for 27 that i can think of.

 

even though there might not be a lot of members in the TWS sub-forum, members still check it out from time to time. It's OK to post in the main forum but the thread will be moved to the proper sub-forum if it is related to the topic. No harm done. Most people will see the thread in the main forum because the link to is there.

Depending on tire size, some tires are to be filled with air to specs, which is obviously from the manufactuer. I don't think it is low at all depending on tire size. Check the owner's manual just in case. Honestly, some tires don't need as much air as others.

 

I would agree with that statement. Different tires have different load ratings. Max PSI is needed to achieve the full load ratings of the tire. Also, different tires have different max psi ratings. In those cases, I use a percentage of max psi when jumping from one tire to the next - assuming similar load ratings. For example, if the stock psi was 70% of max psi on the Michelins, go for 70% of max on the Khumo's to start. Ultimately, you're looking for even wear across the whole tread surface. If you corner hard, increase the psi until you're no longer rolling over on to the sidewall.

 

I answered you in a PM

 

why not just post?

 

I got your PM. Thanks

 

I'd say 35psi or so for the best balance of traction and ride quality.