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Old 04-21-2008, 02:40 PM   #1 (permalink)
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Default tire size on forester 1999

i want your advice on the perfect tire size for my 1999 forester on 03 wrx wheels without changing the accuracy of the speedometer

thanks alot

oh yeah wrx suspension on it too
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Old 04-22-2008, 11:12 AM   #2 (permalink)
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Stock is 26" diameter. However, Subaru seems to set them somewhat conservatively, so 26.5" to even 27" is better. I'll note you can fit any tire with a section width up to 9.5" in the wheel well on a +48mm offset rim, i.e. 235 and even some 245 wide tires. However, you're stuck with 225 and maybe some 235 tires with the 7" wide stock rims. 205 to 225 will be more common for that rim width.
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Old 04-22-2008, 12:27 PM   #3 (permalink)
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Stock 03 WRX rims are 16 x 6.5, just like Forester wheels but with a different offset. I'd normally recommend 225/60-16 but I can't say for sure that they will not rub.. I'd have do do some research. Will a 16 x 6.5, 55 mm wheel with a 225/60-16 tire rub on a 99 Forester w/ WRX struts?
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Old 04-22-2008, 02:41 PM   #4 (permalink)
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If you're on WRX struts and springs I can pretty much guarantee that anything wider than a 215 size will rub... especially if the wheels have the WRX-specific offset too (which is 53 or 55 I think?)

We're running 215/45/17's on our 98 S (lowered on WRX struts & Prodrive springs) to prevent rubbing, and that is with a 48 offset.
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Old 04-22-2008, 02:57 PM   #5 (permalink)
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I once ran 225-50-16 on the old WRX wagon. But the wheels were 16x7 50 mm.
Too many variables here.
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Old 04-22-2008, 03:38 PM   #6 (permalink)
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so my best is to go with oem size 215-60-16???? oem forester i mean
does it make a difference if i have a wrx swap with manual tranny???
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Old 04-22-2008, 03:48 PM   #7 (permalink)
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Using WRX wheels that is probably best.
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Old 04-22-2008, 05:03 PM   #8 (permalink)
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Quote:
Originally Posted by tech View Post
so my best is to go with oem size 215-60-16???? oem forester i mean
does it make a difference if i have a wrx swap with manual tranny???
Is it a complete driveline swap, tranny and all? If so, you should probably run WRX sized wheels and tires to maintain the WRX's final drive and avoid any speedo error.
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Old 04-22-2008, 06:11 PM   #9 (permalink)
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Is it a complete driveline swap, tranny and all? If so, you should probably run WRX sized wheels and tires to maintain the WRX's final drive and avoid any speedo error.


exactly what my swap shop told me thanks guys
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Old 04-22-2008, 09:15 PM   #10 (permalink)
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215/55/17 would be my choice to avoid rubbing....
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