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#1
6th June 2010, 05:47 PM
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The standard tyres on the Sierra are bit balloon-like to look at.....195/65R15 IIRC. I was going to use 16" wheels with 205/55 tyres which would keep the overall diameter almost exactly the same.
I'm just not a fan of huge side walls.
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David 
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#2
6th June 2010, 06:09 PM
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My sierra donor has 14 inch tyres.
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#3
6th June 2010, 06:13 PM
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So does mine but I think the correct 15" size is 195/65. The 55 profile of the 16" tyre shouldn't be too low to have an adverse affect on handling should it?
When I said standard I meant for the cars that came with 15" wheels.
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David Last edited by DStanley1809 : 6th June 2010 at 06:21 PM.
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#4
6th June 2010, 07:02 PM
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The stock sizes on the Sierra are in fact 185/70R13 and 185/65R14, so the 15" size that matches best is 195/55R15. People often get 195/50R15 tyres, they make the speedo overread by 3.4%. 195/65R15 would be 6.4% too slow.
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Albert Haynes Roadster FAQ | Haynes Builder Locations Gallery, build thread in Lithuanian / via Google Translate.
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#5
6th June 2010, 07:12 PM
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That seems better, not sure where I saw the size I thought they were then
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David
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