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Old 02-24-2006, 10:09 AM   #1
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Default Tire size on my 03 SSEi

I just bought an 03 SSEi with Chrome wheels. My question is this...The original tires are still on the car GY RS-A'*. I would like to add a little meat to it. How big of tires can I run on the original wheels (7" I think) without affectiing the speedometer?

My research shows 255/50 x 17 should be a direct replacement. Any comments?
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Old 02-24-2006, 10:20 AM   #2
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Yep, that should keep your speedo. relatively close. 690.3 vs. 686.8 mm.

A little over an 1/8" difference in diameter. You won't notice it.

http://www.paspeedo.com/calculator.htm
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Old 02-24-2006, 11:03 AM   #3
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harry, thanks I guess my big concern now is wheel width.
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Old 02-24-2006, 12:00 PM   #4
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Well, 20 mm is a little over 3/4". I would think it would be fine. We'll see if somebody else wants to chime in that may have gone wider than stock.
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Old 02-24-2006, 06:07 PM   #5
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well mine are 245/45/18'* and dont rub.

I cant honestly say with 255/50'* but it sounds safe.
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Old 02-24-2006, 09:53 PM   #6
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Default Re: Tire size on my 03 SSEi

Quote:
Originally Posted by Toms94
I just bought an 03 SSEi with Chrome wheels. My question is this...The original tires are still on the car GY RS-A'*. I would like to add a little meat to it. How big of tires can I run on the original wheels (7" I think) without affectiing the speedometer?

My research shows 255/50 x 17 should be a direct replacement. Any comments?
Yes, 255/50'* are the ones. SIlverBullet has Potenza'* in that size and no they dont rub.
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Old 02-25-2006, 12:35 AM   #7
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Thanks for the feedback. We are going to get some miles out of these Goodyears but when the time comes to put on new shoes 255/50'* are going on it.
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Old 02-25-2006, 12:42 AM   #8
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You'll be fine treat the fine American car to American tires. I hate it when Toyota'* get FIrestones, and uhhh Chevys get Toyos.
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Old 02-27-2006, 11:06 PM   #9
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alot of us with the 17" wheels move up to 255/50-17 tires.
i had 65k on my Michelins (235/55HR17) darn good tire , just wanted a wider tire and the BFG'* G-Force T/A KDWS only set me back $132.00 (US) a tire. the BFG'* have the same treadwear rating (400) as the Michelin'* so i hope to get about the same mileage. the 255/50-17 tire has the same diam. as the stock tires just a little wider. the car looks good with the wider tires and they dont rub at all, GM should have offered the 255'* as a option.

ROD
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Old 03-01-2006, 10:28 AM   #10
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Quote:
Originally Posted by rrounds
alot of us with the 17" wheels move up to 255/50-17 tires.
i had 65k on my Michelins (235/55HR17) darn good tire , just wanted a wider tire and the BFG'* G-Force T/A KDWS only set me back $132.00 (US) a tire. the BFG'* have the same treadwear rating (400) as the Michelin'* so i hope to get about the same mileage. the 255/50-17 tire has the same diam. as the stock tires just a little wider. the car looks good with the wider tires and they dont rub at all, GM should have offered the 255'* as a option.

ROD
Thanks, rrounds that was the info I was looking for.
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