Last post on Feb 07, 2012 at 8:31 PM
You are in the Subaru Impreza Maintenance & Repair
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Subaru Impreza, Tires, Sedan, Wagon
#106 of 114 There's more to rim fitment
Jan 27, 2012 (5:03 am)
There's more to rim fitment than just the dimensions. The wheel has to clear the brake parts - so that means you just can't just look at the dimensions.
#107 of 114 Re: There's more to rim fitment [capriracer]
Jan 27, 2012 (7:42 am)
That's why I was sticking with impreza and wrx rims only. Looking at the link above, looks like many of the oem rims would fit. If someone knew which rims will ft without a problem, I can start searching for a second pair.
#108 of 114 Re: There's more to rim fitment [kanjii]
Jan 27, 2012 (10:48 am)
The only ones that will not fit are STi rims. Otherwise, 16" or greater Subaru rims with a 5x100 bolt pattern will fit it. I recommend that when you find a set, you test-mount one on the front of the car just to ensure it will meet your need.
Jan 27, 2012 (2:13 pm)
Test mount without the tire, unless your upsizing and looking to see if the tire clears components.
#111 of 114 Re: Oversized Tires for Off-Highway Use? [fandango]
Feb 07, 2012 (12:44 pm)
You might consider a mix of smaller rims with slightly higher profile. I am not sure if the 2007 would still take a 15" rim, but you might check on that. If so, you could go with a stock '96-'99 Outback wheel (205/70R15), and that might be just about perfect at the same width with maximum sidewall and a 0.7" increase in radius (if you have the clearance!).
Assuming the 15" will not fit, your model looks to have 16" rims on it with the 205/55 tires. You would need to measure the clearance, both in the wheel well and between the tire and strut, to actually determine what will fit. Just increasing the sidewall height will give you a little more flexibility than if you were wanting to go wider as well because you shouldn't have any issues with rubbing when you turn. At a 205mm width, moving to a 60% ratio will increase your radius by .4", while a 65% ratio will increase your radius 0.8".
While that radius increase won't give you much additional ground clearance, I imagine it will help when you're dragging belly through that mud or crossing that creek!
In addition, those ratios will also knock your speedometer/odometer off by 3% and 6%, respectively. So, while running them, if your car is traveling at 60 mph, the speedometer will read ~58 mph and ~56 mph (respectively).
#112 of 114 Re: Oversized Tires for Off-Highway Use? [xwesx]
Feb 07, 2012 (1:21 pm)
Yes, I would want to keep the 205 width and just get a higher profile sidewall. It looks like a 65 is about the most that would fit, and it would give me about an inch more height, which would nice out there in the dirt.
It won't help much with the biggest problem, though, which is the angle of attack. That low front end really sticks out there.
Gotta get me a Forester.
#113 of 114 Re: Oversized Tires for Off-Highway Use? [fandango]
Feb 07, 2012 (2:36 pm)
That low front end really sticks out there.
That it does. I had the same problem with my Outback ('96) when I took it off road. My Forester, a 2010, has nice angles on it. It sure could use a rear LSD though. The VDC does nothing for you in those situations, so you're basically stuck with open differentials.
#114 of 114 Re: Oversized Tires for Off-Highway Use? [fandango]
Feb 07, 2012 (8:31 pm)
205/65r16 is 26.5"
205/70r15 is 26.4" overall diameter.
Ever consider a skidplate?