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#17955 of 19336 07 Impreza no rear end traction?
Jan 10, 2009 (10:27 am)
07 Impreza AWD
I found my rear passenger tire flat last Saturday (1/3/2008). There was a nail sticking out of the sidewall. My nearest dealership is about 50 miles away.
So, I had to have the tire replaced locally. I couldn't find the exact match for the factory tires (Bridgestone). So, I had to have a BF Goodrich with the same specs installed.
I took my car to Subaru on Wednesday for other service (I have been having issues with the heat/defrost controls sticking). It was slightly snowing that day and I took the interstate. I still drove around 65 to 70 mph because the conditions weren't bad. I had no issues with traction or sliding.
This morning, I got in my car and on to the interstate. I was going about 70 and the rear end of my car just started coming out from behind me. It was like I was driving on ice. There is no ice. It's too warm for ice. The roads were a little damp, but there was no reason for my car to behaving in that manner. (Honestly, it felt like I was driving my husband's mustang at too fast of a speed in pouring down rain.) I pulled off and was attempting to turn into a gas station. The rear end of my car just start skipping/jumping and shuddering.
My tire pressure appears to be fine. I checked all of my lug nuts. I have no lights on on my dashboard. I do not have a traction control button. My emergency brake was not on. I checked under the car and under the hood to make sure I didn't see any leaks of any sort.
I have never pulled anything with my car. I don't drive my car crazy-- I'm an adult female.
I can take curves at about 35 mph max without my car acting up. At 70mph on a straight-a-way my car starts fishtailing. My car has NEVER handled like this!
What else do I need to check before I have my car towed to Subaru??
I have Subaru Roadside assistance, so hopefully I won't have to pay for the tow. I don't like having to be without it. I don't like my husbands car.
Edited to add:
There was some kind of a low whistling noise coming from my car on my slow drive back to my home.
#17956 of 19336 Re: 07 Impreza no rear end traction? [jiromo]
Jan 10, 2009 (10:56 am)
my "guess" is something has gone wrong with the rear differential.
Many earlier Subarus (through around '08) used limited slip rear diffs, and if the diff's clutches have locked up, then it will not properly distribute power to the rear wheels, and cause fishtailing.
#17957 of 19336 Message---Ill 5
Jan 10, 2009 (11:42 am)
I've been getting the message Ill 5 on my speedometer on and off.
It comes on for a minute or so then reverts back to the regular ( how many miles I've gone).
This is a 05 Legacy Turbo automatic.
Thanks for your anticipated help
#17958 of 19336 Re: 07 Impreza no rear end traction? [jiromo]
Jan 10, 2009 (11:57 am)
There should be a note in your owners manual about replacing tires. IIRC, replacement tires should have the same or nearly the same tread depth as the other tires. something to do with the AWD. I'm sure that someone with more knowledge will have something to add.
#17959 of 19336 Re: 07 Impreza no rear end traction? [kurtamaxxxguy]
Jan 10, 2009 (2:45 pm)
My guess is the new tire you had mounted is not the same as the one you have on the other side. In AWD Subarus, all 4 tires should have the same circumference with a 1/4 inch deviation tolerance. The faster the speed, the more the disparity will show and wreac havoc with the AWD system, which, in turn, can cause fishtailing.
Just because the tire may have the same spec size such as 215/60R16, it doesn't mean the circumference will be the same. Have a dealer check this out ASAP before the AWD system gets damaged.
#17960 of 19336 Re: Message---Ill 5 [saywhat]
Jan 10, 2009 (2:47 pm)
I think Ill 5 = ILL 5 = ILLUMINATION level 5 = dashboard illumination control.
#17961 of 19336 Re: 07 Impreza no rear end traction? [jiromo]
Jan 10, 2009 (5:21 pm)
"07 Impreza AWD 11,000 miles Automatic... rear passenger tire flat... nail sticking out of the sidewall... had to have the tire replaced locally. I couldn't find the exact match for the factory tires (Bridgestone). So, I had to have a BF Goodrich with the same specs installed... took my car (50 miles) to Subaru... for other service... This morning, I got in my car and on to the interstate. I was going about 70 and the rear end of my car just started coming out from behind me. It was like I was driving on ice. There is no ice. It's too warm for ice. The roads were a little damp... The rear end of my car just start skipping/jumping and shuddering...."
Page 11-36 of my 2008 Forester Owners Manual says:
"Mixing tires of
different types, sizes or degrees
of wear can result in damage to
vehicle’s power train."
It sounds like the new tire could be mismatched enough to damage the AWD after the fast 100-mile trip to the dealer. Perhaps the new tread increased the diameter too much, or perhaps the new tire is even a size larger (check it). In those cases, I would think the Tire Pressure Monitoring System would detect a mismatch in diameter -- which is how it monitors pressure. If your car has TPMS and the new tire was a problem, a warning light should have showed.
#17962 of 19336 Re: 07 Impreza no rear end traction? [samiam_68]
Jan 10, 2009 (6:34 pm)
The '09 Forester manuals warn of the same condition wrt mismatched tires.
There should be mention in the Drivers manual of a fuse you can install to disable the AWD system (in the Forester, I believe that fuse is inside the car on the fuse panel near the driver's left knee). Once that fuxe is inserted (you can get spare fuses in the fuse compartment under the hood), the vehicle reverts to FWD only and an AWD symbol, indicating AWD shutoff, should appear in the instrument console.
If your shudder / fishtailing goes away when in FWD mode, that would suggest the problem is with AWD imbalance or possibly the rear differential.
#17963 of 19336 Re: Message---Ill 5 [samiam_68]
Jan 10, 2009 (11:17 pm)
Thanks samiam 68, it was driving me nuts!
Jan 11, 2009 (8:42 am)
these days anyone w/ internet access should be able to match tires easily... if you have a spare (even a donut), go to someplace like Tire Rack (tirerack.com) and have them ship you a replacement (assuming they can still get it); even if they can't get it they can tell you what tires match the diameter of your current ones.
I almost always buy from tire rack and have them drop ship to my local installer.