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Hi,

I'm putting new tires on a 2008 Cayman my son is buying. He'll need all season tires, so that makes it harder. Could I put 225/50R17 in place of the front 205/55R17 on the front? They're about .8 in wider, but still will fit the rim spec (6-8 inches and the stock rim is 6 inches) Is there any significant downside to this? I'm thinking of getting conti extreme contact dws/06, which doesn't offer the 205/55R17. I have these on a car of mine. Any input welcome - thanks
 

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Those are the correct diameter and the manufacturer states that they'll fit a 6" wheel, so there wouldn't be any problems running that size. I'd consider running the 245/50ZR17 DWS06 in the rear, as that will keep the width stagger closer to the factory spec; which would reduce the chance of any unusual handling characteristics.
 

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Just bumping this as I need to replace a front (current 205/55/17) and haven't had any luck finding that specific size... do you know what other sizes will/won't fit the standard 17" rim?
 

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I am getting ready to buy all season tires, for the 987.2 it is recommended 205/55-17 235/50-17 , I am not sure what size to go with, possibly 215/55 & 235/50, I have the cup 4 wheels 7.5 front 8.5 rear, any advice appreciated, anyone know why the fronts are 55 and rear 50
 

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I had the same issue. Picked up a 2009 with 17" wheels and the tires were shot. I decided to go with 225/50/17 in the front and 255/45/17 in the rear and the tires. This size is only .4% different from stock so good there and the wheel widths are big enough to support them. I went with ExtremeContact Sports but they make DSW06 in this size IIRC so you can get a good all season. This size allows you to get into modern tires.

I have no idea how general feel is different from the stock size because as I mentioned the tires were shot when I got the car. I can tell you I took it to the track and did 6 sessions a couple of weeks back and the car/tires did fantastic.

225 needs minimum 6" wheel
255 needs minimum 8" wheel
 

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Nominal sizing varies from tire to tire. I know some folks get OCD, you may take some solace in this fact. I've had 205's that were actually 195 wide. I've had 205's that were actually 225 wide.
 
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