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Erm, 215/45/17s ok on 205/45/17 rims?

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Old 07 October 2002, 05:49 PM
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Guy was supposed to fit 215/40/17s on my P1 rims which are 205/45.

However, he didnt and when i pulled him on it he said that what i had told him and he had ordered only those in for me.

In short, he got it wrong but i had driven 70 miles to get the tyres at a good price.

Will it matter? Will anything be affected?
Old 07 October 2002, 06:27 PM
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I got 215/40/17's put on today instead of my old 205/45/17's. Guys at tyre place said it may put speedo out as profile is slightly smaller (will make speedo slower I assume which is good). Can see the extra width on the rim which should make it harder to scratch the rims than with 205's. Will rack up a few hundred miles on these before I start pushing them.

Simon.
Old 07 October 2002, 06:53 PM
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I think there is some confusion here. Am i right in assuming that your car has been fitted with 215/45/17? If this is the case i cant see any real problem. If i was in your position however, i would have told the bloke to get the right tyres, regardless of the distance you travelled.
Old 07 October 2002, 11:01 PM
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Andy W
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http://www.miata.net/garage/tirecalc.html

This might help
Old 08 October 2002, 01:45 AM
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Depending on what shape car you have (classic or bug eye) then if your running 215/45/17 on a classic your running the wrong size tyres (they should be 215/40/17) but on a bug those tyres are ok (215/45/17)
Hope that helps

Tony
Old 08 October 2002, 10:30 AM
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I thought 215/45 on a classic would give you 'rubbing' issues whereas as Tony has put 215/40 are the correct fitment....?
Old 08 October 2002, 12:07 PM
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According to Andy W's link changing from default Pirelli 205/45 to 215/40's means your speedo is out by up to 2% too much which is good as your doing less than what your speedo tells you.

Simon.
Old 09 October 2002, 02:43 PM
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The 215/45s are on my P1, they are not rubbing but i am keen to learn what implications they have over the 205/45 the car came with. (The tyre bloke was supposed to be fitting 215/40s as advised this was best)
Old 11 October 2002, 11:45 PM
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Chris Id see about getting them swapped as your 215/45's are gonna make your speedo show slower speeds than what you are actually doing - not what you want really. 215/40 is the way to go!

Si.
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