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The Tire Rack's Tire & Wheel Forum
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Old 01-23-2014, 04:16 PM   #1
xpro
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two different tire brands on front and rear

I hit a pot hole and blew two of my tires and damaged two of my rims. I found 4 used tires and rims online and got them installed. But after installation I found out one of the ties had uneven wear.

What I'm thinking about doing is that I put my two of my old tires on the rims I recently got online. All four tires are 205 55 16 but the ones I had are continentals and the used ones I got online are Michelin. My car is a 2004 325XI. Would having two different tire brands cause any damage to the AWD system?
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Old 01-23-2014, 04:39 PM   #2
bee-em-dougle-u
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I hit a pot hole and blew two of my tires and damaged two of my rims. I found 4 used tires and rims online and got them installed. But after installation I found out one of the ties had uneven wear.

What I'm thinking about doing is that I put my two of my old tires on the rims I recently got online. All four tires are 205 55 16 but the ones I had are continentals and the used ones I got online are Michelin. My car is a 2004 325XI. Would having two different tire brands cause any damage to the AWD system?
Should be OK. The sticklers will say that all four tires need to be identical, but if you use tires of similar construction and purpose (e.g., M+S tires) from different manufacturers, you should be fine. The other important thing is that you're keeping the same size, so tire diameter should be roughly the same to avoid undue wear on the center diff.
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Old 01-23-2014, 04:43 PM   #3
Sedan Hussein
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Currently running Potenza s04's up front and Michelin PS2s in the rear. Hit a nail up front and replaced the front 2. I'm just going to wait until I wear down the rears to match the tires. It'd be alot easier with an LSD
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Old 01-23-2014, 04:48 PM   #4
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Doesn't matter in the summer. However, not recommended for winter driving conditions.

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Old 01-23-2014, 07:03 PM   #5
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Front and rear difference is OK.
Right and left difference is nono.
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Old 01-23-2014, 07:07 PM   #6
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I do it too. However, I do recommend you stick to tires of similar grip levels.
I've noticed that when you have one sticky set and not so sticky set. You do notice a difference. So keep it similar.


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Old 01-23-2014, 08:06 PM   #7
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front and rear difference is ok.
Right and left difference is nono.
+1!
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Old 01-24-2014, 04:38 AM   #8
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Front and rear difference is OK.
Right and left difference is nono.
His car is AWD would you care to share the logic behind your response ?


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Old 01-24-2014, 10:12 AM   #9
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In other AWD systems, yes, it is known to cause damage. Not immediately but over time. You need to find out what the tire circumference tolerance is for BMW. You want all of your tires to be close in size to each other. This may require shaving a tire. Not a big deal I'm told. Luckily in my 14 years of owning AWD's I never had to do this. Of course, I now have a donut on my new to me RWD Cic and am debating replacing just 1 tire or sucking it up and going 4 new summer tires. Oh, and as stated, stick with the same tire tread type for all 4, i.e., All Season, Winter, etc... Matching the tire manufacturers doesn't matter as much.
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Old 01-25-2014, 09:20 AM   #10
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I've said it before and don't want to say it again, but I will. I lived in Germany for 5 years and I had a Benz and my wife had a Jag. The vehicle would NOT PASS the safety if all 4 tires didn't match. If it doesn't matter, why wouldn't the Germans let the car on the road?
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Old 01-25-2014, 09:29 AM   #11
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I've said it before and don't want to say it again, but I will. I lived in Germany for 5 years and I had a Benz and my wife had a Jag. The vehicle would NOT PASS the safety if all 4 tires didn't match. If it doesn't matter, why wouldn't the Germans let the car on the road?
Dude. Tüv has a much higher standard. Probably the highest and toughest in the world.
A lot of it is based on the fact that they have an autobahn and a car may experience sustained high speeds that it wouldn't experience anywhere else.
So in summary.
This ain't Germany.


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Old 01-25-2014, 10:18 AM   #12
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Dude. Tüv has a Mach higher standard. Probably the highest and toughest in the world.
A lot of it is based on the fact that they have an autobahn and a car may experience. Sustained high speeds that it wouldn't experience anywhere else.
So in summary.
This ain't Germany.


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Oh. So at what speed exactly would this become an issue? 130 Km/hr? 150 Km/hr? 200Km/hr? As an afterthought, the Autobahn has higher cruising speeds but the roads are pretty much straight or very gradual curves. It's the secondary highways that are twisty and the most fun to drive. this is where tire grip/ condition/ tread pattern would have the most effect on safe driving.

Last edited by Slapsys; 01-25-2014 at 10:24 AM. Reason: additional thoughts
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Old 01-25-2014, 10:24 AM   #13
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Oh. So at what speed exactly would this become an issue? 130 Km/hr? 150 Km/hr? 200Km/hr?
Damn sure not at our national average speed limit. Also, I don't think it's so much the speed. But sustained speed.
That and the what I mentioned before.
If the grip levels are very different then you will feel a difference. At autobahn speeds. Do you want to have to worry about how each axle will behave around a curve?
But the average American driver its just not a big issue, because those speeds just aren't sustained. Most places we can go fast, we aren't doing much turning.

No one is forcing anyone to mix tires tho. I've done it for years. But I try to stick to tires of similar grip levels. Never had an issue.



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Old 01-25-2014, 10:31 AM   #14
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You'll be fine as long as they're the same size, and same season is preferred. All the naysayers are talking out of their asses. Unless you do 100mph+ for sustained periods of time, you'll be fine.
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Old 01-27-2014, 01:45 PM   #15
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OP - It's never recommended that you run mixmatched tires on your car. I'd say it's really common to see these days, but you should always replace them with the same brand/model when you can.
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