Matt166 Posted April 27, 2013 Share Posted April 27, 2013 Hi all, Car just failed the ME inspection, some aggressive inside tire wear on both rear tires. Alignment is fine with my winter tires (stock rims), no wear noticed. Thoughts: I did travel with my wagon loaded to the brim (with a roofbox loaded to the brim) for 2200 miles last week - could the extra weight cause the suspension to be lower causing toe (like the similar honda issue)? Could my summer wheel setup (2011 WRX with Dunlop Dirizella DZ101 (235/45/17) be causing the issue? My plan of action is to get some saggy butt spacers, and put a RSB in there while im at it. Thoughts anyone? I plan on alignment when the spacers are installed. Link to comment Share on other sites More sharing options...
BAC5.2 Posted April 27, 2013 Share Posted April 27, 2013 How loaded? That could definitely cause some issues. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
Matt166 Posted April 27, 2013 Author Share Posted April 27, 2013 Pretty loaded, just enough room to sleep back there, my box is pretty big too. The springs were definately way down, enough that my low beams were too high. Obviously the smart mans move is not to put that much weight in, but do you think saggy butt spacers will help. Even unloaded the back suspension sits lower than the front. Link to comment Share on other sites More sharing options...
RabidWombat Posted April 27, 2013 Share Posted April 27, 2013 Which tires failed the inspection? Your summers or winters? If its the summers, I'd bet the issue is alignment variation due to the different tire size. You're 20mm wider than stock, so a slight misalignment could result in pretty heavy wear, coupled with a heavy load, and summer tires, they could wear pretty fast. Link to comment Share on other sites More sharing options...
sheppo9 Posted April 27, 2013 Share Posted April 27, 2013 When you loaded the car up, the rear sagged (as you know) and threw the toe way out. Link to comment Share on other sites More sharing options...
Matt166 Posted April 27, 2013 Author Share Posted April 27, 2013 Which tires failed the inspection? Your summers or winters? If its the summers, I'd bet the issue is alignment variation due to the different tire size. You're 20mm wider than stock, so a slight misalignment could result in pretty heavy wear, coupled with a heavy load, and summer tires, they could wear pretty fast. Interesting info, so i'm guessing as I do most of my miles on my summer setup I should have that aligned, and not worry so much about the winter - especially as there is snow on the road most of the time in CO and wear is pretty non-existent. Or, should I sell the WRX rims and go back to stockers? I do like the way the car looks but its always function>form as a personal preference. Is the 20mm a common issue for wear? Link to comment Share on other sites More sharing options...
SBT Posted April 28, 2013 Share Posted April 28, 2013 Loaded, you're going to increase camber and likely add negative toe, which would cause the inside wear that you described. Definitely check your alignment settings when you go between tires with difference in size, offset and even type (winter versus HP Summer) where sidewall rigidity can affect toe and camber settings. FWIW, I added the WL KTA124 to enable me to precisely dial-in both camber and toe. - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
RabidWombat Posted April 29, 2013 Share Posted April 29, 2013 Interesting info, so i'm guessing as I do most of my miles on my summer setup I should have that aligned, and not worry so much about the winter - especially as there is snow on the road most of the time in CO and wear is pretty non-existent. Or, should I sell the WRX rims and go back to stockers? I do like the way the car looks but its always function>form as a personal preference. Is the 20mm a common issue for wear? You can think of the extra width as acting like a lever arm. So properly aligned its not an issue. But if your alignment was a little bit off, it will have more impact on a wider tire. Get an alignment for your summer tires, and I suspect you'll probably be fine. Link to comment Share on other sites More sharing options...
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