Tyre speed/load rating
Moderators: Doone, westonwarrior
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egor110
Tyre speed/load rating
Just double checking, if i'm looking at some tyres for 17'' alloys and there marked up 205/40/r17 there no good because the speed ratings too low as i need a s(96) for the rear tyres?
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trevd01
You don't say what the load rating is, but yes it should be 96 for the rears.
Those tyres are several sizes too small as well. From memory, 225/45 or 255/40 is right for a 17 inch wheel.
Loads of recent posts on tyre size - and size check on miata.net.
Those tyres are several sizes too small as well. From memory, 225/45 or 255/40 is right for a 17 inch wheel.
Loads of recent posts on tyre size - and size check on miata.net.
Last edited by trevd01 on Wed May 30, 2007 1:45 pm, edited 2 times in total.
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westonwarrior
- Supreme Being
- Posts: 2918
- Joined: Thu Apr 05, 2007 6:27 pm
205 = width accross tread
40= ratio of height side wall
r= radial
17 = size of wheel, diameter
After those Digits there should be 2 more a number and a letter
IE 96 s
96 being the load rating and s being speed
as long as the load rating is 96 or above and the speed letter is s better you should be ok
there is a fact sheet on tyres in the members only section
40= ratio of height side wall
r= radial
17 = size of wheel, diameter
After those Digits there should be 2 more a number and a letter
IE 96 s
96 being the load rating and s being speed
as long as the load rating is 96 or above and the speed letter is s better you should be ok
there is a fact sheet on tyres in the members only section