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Old 10-10-2010, 08:33 AM   #83
Stex

 
Drives: 67 goat, 69 goat ram air III
Join Date: Mar 2009
Location: South texas
Posts: 1,443
Quote:
Originally Posted by NoBS View Post
Can anyone tell me the impact on my speedometer if I go with 245/50/ZR19 all season tires on 8" wide 19" rims for winter? I have an early model 2010 (no wheels on my Brembo's so the 19" rims should work), with the staggered 20" setup (245/45R20 and 275/40R20). It's starting to get cold and I have to continue driving my car.... Will I have to change the speedometer calibration each time I change over from summer to winter to summer? Thanks for any help.
this will help if changing height of tire:


http://www.miata.net/garage/tirecalc.html
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