Okay I have a stock 87 brat, with no lift. I am looking at the 6 lug conversion abit and was wondering, what size tires would fit on a stock ride brat?

 

I was kind of looking at the 205x50x15s. That gives me a .5% speedo change and the diamater of the tire is about .1" smaller then stock.

 

But if I can/should go larger with the stock ride height, please let me know whats the biggest useable, this will be for a street brat, little offroad.

Edited October 3, 200817 yr by Jurrel
Brain and fingers mismatch- 205x50x13 to 205x50x15

I'm running 205/60/14's on my stocker Brat... No rubbing issues etc. at all.

Okay I have a stock 87 brat, with no lift. I am looking at the 6 lug conversion abit and was wondering, what size tires would fit on a stock ride brat?

 

I was kind of looking at the 205x50x13s. That gives me a .5% speedo change and the diamater of the tire is about .1" smaller then stock.

 

But if I can/should go larger with the stock ride height, please let me know whats the biggest useable, this will be for a street brat, little offroad.

Using the miata tire calculator, I get a ~ 9% difference using 205/50-13 tires.

 

 

Tire Size Comparison

 

Specification: Sidewall__Radius__Diameter__Circumference__Revs/Mile__Difference

185/70-13:__5.1in__11.6in__23.2in__72.9in__869__0.0%

205/50-13:__4.0in__10.5in__21.1in__66.2in__957__-9.2%

 

Back to the Calculator

Edited October 3, 200817 yr by edrach

Opps I ment 205X50X15s!

Opps I ment 205X50X15s!

That makes much more sense.