Rear Wheels Inside Wear

[CharlieHustleX5]

You could always try picking up a set of Rogue Engineering camber plates to correct the negative camber a bit, which would possibly cause the toe to change in the direction you want?

[anerbe]

Originally Posted by Disneygrad

Once again, X5 Meister takes the cake. Fact is and according to Ted's BMW, Mercedes, Audi who is a CERTIFIED BMW Mechanic, the rear toe-in on all X5's is, in his words: "EXCESSIVE" And to further quote: "Always has been and he does not know why." He says the wear is especially noticible on "soft" tires and tells me I have perhaps 30,000 miles on my brand new 22" tires.

typically, toe is designed into the stock alignment specs to

1. increase high speed stability - the tires facing towards each others push the sides of the car towards the center (in). if you neutral out the toe, the vehicle can wander more at higher speed.

2. reduce squirm on acceleration - when you accelerate, the rear wheels tend to go to toe out. when rear bushings go, your toe changes even more, which is why the rear seems really loose on acceleration.

making your toe more neutral in the rear will improve your wear, but at a cost (stability)

[piaabro210]

Ok folks here I am at 32,320 total miles on my 08 X5 and needing my 3rd set of tires!! Check out these pics of my Bridgestone Duelers runflats that I switched to after the Dunlaps. I'm entertaining the idea of going with Non-runflats this time around to maybe stretch out the wear of the tires.

I'm also wondering if this is about normal for owing a X5? As far as only getting about 15K to 20K worth of miles on tires. It just doesn't seem right! Thanks for the help

[Oscarguitar]

I just don't understand this level of tyre wear. I got 49,500 miles out of a set of 19 in Michelin Damaris. All even wear and there was still life in them, just got fed up waiting to replace them. The suspension is standard Sport suspension on a 2005 X5 (with the rear camber). I hear that the new X5s eat tyres but on the E53 can last a long time. I always keep a close eye on the tyre pressures, 32 psi all round apart from when i have a load on.

I try to drive it like a rear wheel drive car, slow in, straighten up accelerate out, it handles well and sits it tyres four square. If I try to pile in to corners too fast, squeal round and boot it too soon, well it is going to chew them up. The cars do weigh the best part of 2 tonnes, so a little mechanical sympathy is called for. Physics will win in the end.

These are just my observations, but I find some of the tyre wear rates on this board hard to comprehend.

[Oscarguitar]

BTW, those tyres look under inflated, arched in the middle, could just be the way the picture is taken, but that can really increase inside tyre wear, especially with the camber.

[piaabro210]

That's just the angle of the picture. After going through the Dunlaps so fast I'm pretty religious with the proper tire pressure. 32psi in the front and 35 in back just like OEM recommedations.

[Oscarguitar]

If you have nothing loaded 35 in the back could be too high. If it is just you 32 psi in the rear is fine. Mind you that doesnt explain the inner wear. Run flats on my 335d had the same problem, so i ditched them and went to ps2s. Night and day for ride and grip and wear. Handling more progressive, but slightly softer.

[HAMAR]

my tires was like this after ca.20.000 miles

[ard]

It's actually pretty simple:

With the camber on a BMW you need the TOE set to minimum. (What happens, is that with the camber AND the cross toe, the inner edge of the tire is just brutalized.)

On page one someone posted their alignments...the toe is HORRIBLE. 0.08, 0.10..way to high.

But, you say, how can this be?? It is in BMW spec...

Answer: BMW spec is terrible. People dont realize this, and just have dealers "check the alignment" and blindly follow the print out. Really bad idea

Have the TOE set to 0.01 on both rear wheels and your tire life will triple. Set the front to the minimum too. Tell them what you want, demand that they set it precisely. (How do you think we set up race cars? "just somewhere in the range will be fine"... nope)

It really is that simple.

A

[rph74]

Another option to help add to your tire life is to have your rear tires dismounted and flipped around. You want the insides of your tires to now be on the outsides of your tires. It cost me $18 bucks and I did it after 5,000 miles.

Even just that little mileage caused a measurable difference in tire wear. It wasn't immediately noticeable to the naked eye, but using the old Lincoln Head Penny trick as my tire depth measuring device showed a marked difference. Did on my 540 and I plan to do it on the X5 too.