04-05-2024, 02:11 PM | #1 |
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Tires
I’m coming up to the point where the tires will need to be changed.
1. Why have my fronts worn quicker than the rears? I thought the xdrive is rear-biased? I couldn’t rotate them as I am on a staggered setup. 2. Is it true that due to transfer case reasons, I have to replace all 4 at the same time? If so, again, with the uneven wear between front and rear, isn’t the transfer case taking damage already? Thanks! |
04-05-2024, 03:45 PM | #3 | |
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But really confused about the 2 vs 4 approach now since everything I’ve read so far insists that transfer case damage is guaranteed unless changing all 4 on an xdrive SUV. |
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04-06-2024, 12:46 PM | #5 |
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04-06-2024, 04:17 PM | #6 |
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It’s the difference in diameter that matters. If there is more than 1% difference then it puts strain on the transfer case.
For example, Michelin PS4AS have a diameter of 28.7” when new, and a tread depth of 10/32. If your rear tires are a little more than half worn and you put new tires only on the front they will be outside of the 1% difference the transfer case can handle. Which is why so many people say to replace all 4 tires at once. |
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04-06-2024, 05:10 PM | #7 | |
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But one thing I’m curious about - is the TC already taking damage due to a different wear between fronts and rears? |
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04-06-2024, 06:01 PM | #8 |
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Not unless the difference in wear is crazy different. If fronts were down to the wear bars (2/32) and the rears were still at more than 6/32 tread then yep. But that’s pretty unlikely…unless you’re somehow doing front end only burnouts lol
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04-06-2024, 09:45 PM | #9 |
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Personal experience .... few month ago I decided to rotate tires between front / rear in order to prolong tire life as notice some difference in wear between both axles ... not much. As soon I drove around the block noticed the car was jerking slightly ... return the tires to its original position and issue went away.
Bottom line : tire circumference is very important. I plan to replace all tires. |
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04-07-2024, 04:16 PM | #10 |
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Look at the DOT date on the tires. If they are the original tires…and you have a 2016…the tires may be at their replacement date. Tires have an “age” life span of approx 6 to 10 years. If you have the funds…perhaps it would be a good time to go ahead and replace all 4 tires if they are between 6 to 10 years old…along with the low tire tread.
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