Re: Snow tire size for '86 4kq

["Bruce Bell" <bbell@csn.net>]

Careful.  Did you compute revs/mile from the tire size? Won't
work. there is something called a static radius when there is
weight on the tire. Typical revs/mile for a 195/60 14 is around
916 (D60 A2). and the Dunlop Graspics are closest to this in the
175/65 14 - according to the Dunlop full line book.

There are substantial differences in tire Models and
manufacturers.

----------
> > Where did you get the work done?  Just curious.
> > You can stay stock, or do what I did on the old 90 
> > (soon to be on the 4kq I hope!): 175/70-14.  I'm
> > pretty sure that's the right size.  Or maybe it's 185?
> 
> Specification  Sidewall  Radius  Diameter  Circumference 
Revs/Mile  Difference
> 195/60-14         117mm   295mm     590mm         1852mm      
 869        0.0%
> 185/60-14         111mm   289mm     578mm         1815mm      
 887       -2.0%
> 175/70-14         122mm   300mm     601mm         1887mm      
 853        1.9%
> 185/70-14         130mm   307mm     615mm         1931mm      
 834        4.2%
> 
> Looks like 175/70-14 is right for the 4kq.
> -- 
> Shields.