i just order some 15in rims to take place of my factory 14in steelies. i beleive the tire on their now are 195/60/14, so will 205/50/15 give me the same diameter??

 

ttt

 

close enough, your stock tire diameter is 23.2'' with the 205/50/15's your tire diameter will be 23.07....minimal difference.
Generally when you go up in diameter (14 - 15'') you go up 10 in width (195 - 205 - 215 etc) and down 10 in series (ratio 60 - 50 - 40 etc)

 

Your speedo will be off a lil though. On my dx it had 14in steelies and when i went to 15's with 205/50/15's it threw the speedo off about 3 to 4 mph.

 

Put both tire sizes into this calculator: http://www.miata.net/garage/tirecalc.html And check the results

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">Put both tire sizes into this calculator: http://www.miata.net/garage/tirecalc.html And check the results </TD></TR></TABLE>

already done!
see my post

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16ahybrid &raquo;</TD></TR><TR><TD CLASS="quote">
already done!
see my post</TD></TR></TABLE>

well...he can still use the link for something

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">

well...he can still use the link for something
</TD></TR></TABLE>


yep