i currently have -215 55 r16 - i have my eyes on 4 rims and tires that are 17inch - 225 50 17 moving up to these > will this cause any haertaches or future problems ?? thanx in advance

 

They should work out fine for you...........

 

I have 18" wheels with 225 tires on my HHR, no problems.

 

I put michelin 225/50/17s on my HHR, and even with eibach pro lowering, no problems!

 

I went from factory 16 to factory 17 and lowered with gl's, it's fine.

 

Isn't there something in the car's computer that has to be set for 17" wheels?

Fred

 

Yeah, doesn't it mess up the speedometer reading?

 

It's not the wheel size that affects the speedo, it's the overall height of the tire. If you start with a 26" tall tire, switch to a bigger rim, lower profile tire and are still only 26", your speedo will be the same. It's only if you go with a taller or shorter overall tire it throws the speedo off.


This may help.
http://www.1010tires.com/TireSizeCal...?action=submit
http://www.miata.net/garage/tirecalc.html

 

215/50/17 = 25.5", 225/50/17 = 25.9" Diff of only .400 & only .200 higher on ride height.

That in total is only about a 1% - 1.5% increase in tire overall height, I believe..
Which would slow the speed-O only by 1% - 1.5%...........Almost un-noticable IMO.