Last post on Feb 18, 2013 at 10:11 PM
You are in the Maintenance & Repair
What is this discussion about?
Tires, Wheels, Steering
Edmund's Feature Article: Tire Safety: Don't Ignore the Rubber on the Road
For dedicated winter tires, also have a look at the Snow/ice winter tires discussion topic.
#7206 of 7392 Re: 50 is just a ratio... [texases]
Jan 26, 2011 (3:13 pm)
Yes I would concur with your two takes. I would also add that I drive the car that has 40/35 AR 's night and day DIFFERENTLY. from 65/55 AR and even differently from 70 AR's. I do it seamlessly after 10 years now, but it was at first, ... a PITA.
#7207 of 7392 Re: 50 is just a ratio... [kyfdx]
Jan 27, 2011 (8:21 am)
Yes, I was starting from the assumption of a typical car tire width...or my car's tire width, anyway. In my case, 215/50, the sidewall should be about 4.25 inches. The optional 18s would, of course, reduce the sidewall height to about 3.75 inches.
#7210 of 7392 2007 Mdx tires
Feb 15, 2011 (2:27 pm)
#7211 of 7392 Tires on 4 wheel drive 2007 forrester
Feb 25, 2011 (11:47 am)
I was just in a tire shop to have a flat fixed( approx. 20,000 miles on all 4 tires)and was told that the one tire needed to be replaced. I was also told that ALL four tires needed to be replaced at the same time. This seemed a little crazy to me and needed to find if this was true.
#7212 of 7392 Re: Tires on 4 wheel drive 2007 forrester [rharry1]
Feb 25, 2011 (11:59 am)
Yes, it's true that all 4 tires on your Forester need to be close in circumference, otherwise the awd system can be damaged. 20,000 miles is enough wear to create a significant difference. So the tire with the flat could not be fixed?
One option is to have the new tire 'shaved' to match the size of the existing tires.
How much tread is remaining on the existing tires? Do you like them, or would you prefer a new set?
#7213 of 7392 Re: Tires on 4 wheel drive 2007 forrester [rharry1]
Feb 26, 2011 (6:08 am)
Yes. The AWD drive system on Subarus is very sensitive to differences in tires, front to back. The front and back wheels need to rotate at close to the same rate or else the clutch in the transfer case will overheat (may have the exact details wrong, but you catch my drift).
#7214 of 7392 Re: Tires on 4 wheel drive 2007 forrester [srs_49]
by Mr_Shiftright HOST
Feb 26, 2011 (11:08 am)
I think they allow some difference. I've run new tires in front and somewhat used in back on my Subaru, no problems noted, but the difference in the tires was certainly not extreme---a few 32nds. I believe there is actually a spec on this tolerance.
#7215 of 7392 Subaru def
Feb 26, 2011 (8:49 pm)
1/4" is written Subaru difference.