What PSI should I run my 17in wheels with 205/45-17 tires. Front? Back? I know for my stock wheels and tires I ran 29Psi and 26Psi. I'm not sure what to run the 17's at, help.

 

That size holds the same amount of air as your oe 195/60-15 size, just in a different shape. So using oe pressures is fine. You can increase the psi gradually to help the tire respond better around corners and such. Just do not exceed the max psi on the tires sidewall.

 

i have 205/40r17 on my car and i run a little over 31/28 psi and it runs fine.

ture but you dont want to go to high casue it could give you over inflation wear.

 

There is actually a correct answer to your question, see I work at a tire shop that is a bit above the rest when it comes to employee education, simply put... there is a complicated formula that deals with your service description (load range and speed rating) and the weight of the lancer plus or minus your possible cargo (persons) and the actual size of tire you are using, although previously mentioned the stock and your 205/45 series tires may hold the same volume of air, the tire's construction has a lot to do with how your vehicle will wear on it. For example I assume you aren’t using the stock speed rating, so when you bump up a rating the shoulders can take more weight in cornering, therefore more air pressure will indeed result in better cornering versus that same rated tire with the standard 29/26. All in all with one occupant and using V rated tires, the lancer can handle up to the max pressure on most V rated tires (44-50psi) without producing over inflation wear, provided you consistently keep the pressure regulated (not letting warm weather or cold weather interfere) which is about a 5psi swing, and you keep them rotated. All of this is based on a spirited driver setting.

I used to run BFG gForce sport's 205/55r15 (91V) and I ran 40psi because I don't always drive hard, and with 4/32nd left on tread the wear is perfect all around.

 

haha what tire shop do you work for? cause what your saying is ture but most shop should know this already. but as much as most of what your saying is ture. i would never put my tires that high maybe a little bit more if i went to the track but for street driving theres no reason for it. as it is a most tires max psi is about 40 psi like your gforce sports. most shops would tell you that you will void your tire warranty if you went 40 or above. should your bump it up a little bit yes but i really dont think theres no reson for maxing it out