Winter Tire question
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Audiworld Junior Member
Joined: Jul 2011
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Winter Tire question
I have just been given the opportunity to purchase an RS7. It has 21 inch wheels. The Tire size is 275/30r21. I found that Dunlap makes a SP Winter sport 3D tire that is sized at 275/35r21. That is 1.1 inches bigger in diameter. Does anyone know if this tire will fit in wheel wells without rubbing? Does anyone know of any other 21 inch high performance winter tires? I live in Alaska and we have snow 8 months a year. I put Blizzaks on my current A7 and they have done fine. Unfortunately they don't make a 21 inch tire that I can find. I'm just trying not to buy tires and wheels in a different size. Thanks.
Audiworld Junior Member
Joined: Jun 2006
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My installer said...
"They are 5% of 275mm taller. The diameter of the 30 is 82.5 mm and the diameter of the 35 is 96.25 mm. Therefore the difference is 8mm overall. 4mm is half the diameter and that is the number you have to be concerned with so it is maybe 3/8 of an inch larger and I know you have clearance so the 275/35R21 will work."
I think I'm going to go in this direction too.
"They are 5% of 275mm taller. The diameter of the 30 is 82.5 mm and the diameter of the 35 is 96.25 mm. Therefore the difference is 8mm overall. 4mm is half the diameter and that is the number you have to be concerned with so it is maybe 3/8 of an inch larger and I know you have clearance so the 275/35R21 will work."
I think I'm going to go in this direction too.
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