Circumferences?
21 April 2003, 05:41 PM
#2
Scooby Regular
Join Date: Oct 2001
Posts: 1,833
Likes: 0
Received 0 Likes
on
0 Posts
I believe you mean 225/40/17 that is 61,18 cm height(*3,14/2) while 235/45/17 is 64,33 cm. Otherwise 255/40/17 is 63,58 cm.
Hope this helps you!
JIM
[Edited by JIM THEO - 4/21/2003 5:44:17 PM]
Hope this helps you!
JIM
[Edited by JIM THEO - 4/21/2003 5:44:17 PM]
22 April 2003, 03:05 AM
#3
Scooby Regular
Look here: http://www.miata.net/garage/tirecalc.html
If you do mean 255/40 and 235/45 tyres then the 255 tyre circumference is 1 inch smaller.
If you where going from 235 to 255 then the speedo will read 1.2% to fast. when the speedo says your doing 60MPH you'l acctually be doing 59.3MPH
If you do mean 255/40 and 235/45 tyres then the 255 tyre circumference is 1 inch smaller.
If you where going from 235 to 255 then the speedo will read 1.2% to fast. when the speedo says your doing 60MPH you'l acctually be doing 59.3MPH
Thread
Thread Starter
Forum
Replies
Last Post
TURBO7379
Wheels, Tyres & Brakes
2
10 January 2001 09:10 PM