I was just wondering if the 225/50's are going to put my odometer off any???

 

My speedometer reads 1-2 mph high depending on what speed I am going. It is un-noticable and doesn't bother me at all.

 

OH NO, You mean I am putting more miles on my car than I really should be?????


lol

 

http://www.miata.net/garage/tirecalc.html
check that out


If your stock size is 215/55/16 (as it is on 97-99 SEs), and you put 225/50/16 tires on same rims, when your speedo is reading 60 mph, you are actually going 58.9 mph.... it's 1.8% too fast.....

 

Ok, then that means I have around an extra 1,100 miles registered on my car that shouldn't be there. But that is only if that size tire was on from day one (which isn't the case sense OEM is 215/55/16). So maybe I have an extra umm 700 miles on it???

Ok, how do I roll back my odometer???

 

you shouldn't put widers tires on your 16" rims then what's recomended by the factory, yeah I know that you can and it may look better (I think it does) but you actually decrease your performance because the sidewall roll just kills you when you cornering hard, sad but true

Konstantin

 

Came this way when I bought it two weeks ago... Not going to complain though, fully loaded 5spd SE

 

OK smart guy, did you notice any sidewall roll on my car? I run 225/55-16 in case you don't remember.

 

Andy,

I ran 225/50/26 this season for track and autocross events. I discovered Konstantin is right under these circumstances, but you may not notice on the street. Next season, I'm going back to 215's.

 

Well yeah, autox is a different story.

 

Can changing tire size going up 1 size(15 to 16 nch)give you more mileage on the car or not thanks

 

Depends on what the aspect ratios are. See above for the link to the size calculator