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Old 01-05-2017, 03:03 PM   #1
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Tire Selection for 987.2 Base Boxster - 2009 MY 17" Rims

Facing a problem getting the following size tire set in Michelin PS/2.

Front 205/55R17 Rim Offset 55mm Rim Size 7 In
Rear 235/50ZR17 Rim Offset 40mm Rim Size 8.5 In

Local tire stores can order for Continental - same one I have on my OE.

Wider tires have more options if I go this route:

Front 225/50R17
Rear 245/50R17

What are the risks of going this route? I am not sure if the options are N1 or N2 rated.

Any advise is highly appreciated. Need to get tires replaced before inspections.

SR

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Old 01-05-2017, 06:19 PM   #2
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Question - why are you having a problem getting those sizes? PS2's come in those sizes - I put those exact sizes on my 987.2 this fall and love them to bits. Way better than the Continentals IMO.

205/55 ZR17 and 235/50 ZR17 - total price was around a grand CAD. Michelin Pilot Sport PS2.

Road noise was less and way more grip and stability.
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Old 01-09-2017, 07:08 PM   #3
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Quote:
Originally Posted by Giller View Post
Question - why are you having a problem getting those sizes? PS2's come in those sizes - I put those exact sizes on my 987.2 this fall and love them to bits. Way better than the Continentals IMO.

205/55 ZR17 and 235/50 ZR17 - total price was around a grand CAD. Michelin Pilot Sport PS2.

Road noise was less and way more grip and stability.
That was exactly the problem - I want the PS2s. I am able to get the Rears but the Fronts 205/55 ZR17 are back ordered everywhere here in the US. I checked with Discount Tire, Costco, Tirerack etc.

SR
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Old 01-09-2017, 08:26 PM   #4
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I would go with 225/45-17 front and 255/40-17 rear(or even 245/40)
the wider front gives you more grip and better balances the car

Also look at Pilot Super Sports, its a better tire then PS/2


*******
fixed the size. Should be 225/45, not 225/34
fat fingered it
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Old 01-09-2017, 08:55 PM   #5
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Quote:
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I would go with 225/34-17 front and 255/40-17 rear...

Also look at Pilot Super Sports

^^^ What Jay said! ^^^
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Old 01-10-2017, 03:38 AM   #6
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^^^ What Jay said! ^^^
Thanks y'all. Going wide - what are the disadvantages?

Would these touch the fender inserts if turned lock to lock?

I suppose since the outside diameter may not change, it will not impact either bump stops or any suspension components? Also, any change in the speedometer reading?

My rims are standard 17" - 7 J X 17 H2 with 55 mm offset up front and 17" - 8.5 J X 17 H2 with 40 mm offset back rear.

Thoughts?

SR
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Old 01-10-2017, 07:40 AM   #7
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Quote:
Originally Posted by sudheendrar View Post
Thanks y'all. Going wide - what are the disadvantages?

Would these touch the fender inserts if turned lock to lock?

I suppose since the outside diameter may not change, it will not impact either bump stops or any suspension components? Also, any change in the speedometer reading?

My rims are standard 17" - 7 J X 17 H2 with 55 mm offset up front and 17" - 8.5 J X 17 H2 with 40 mm offset back rear.

Thoughts?

SR
I run 225/45-17 and 255/40-17 without any problems
As far as speedo, well to my knowledge, all of our cars read a few MPH high anyway.
Most 225/45 and 255/40 are the same diameter 255/40 is the factory size so there shouldn't be any speedo change over factory
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Old 01-10-2017, 10:05 AM   #8
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I had trouble finding Pilot SS in the size I wanted last year too. I think I could find the backs but not the 225s for the front.

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