Just noticed yesterday that after approx 1500 miles the inside edges of the rear tyres are bald what's causinf this, I'm assuming camber settings? Anyone have an idea of what it will cost to have it setup correctly, gonna have to travel to have it done to cos there's nowhere local that does camber etc.

I don't think the camber is "adjustable" as such on the rear of the MR2. Is it standard ride height?

Worth tracking down somewhere with a Hunter alignment rig.
http://www.alignmycar.co.uk/

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You've clearly hit a kerb or pothole hard and it's bent the wishbones. It will cost a few grand to fix, I would scrap the car if I were you or I can give you a bag of revels for it.

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NotoriousREV said...

I don't think the camber is "adjustable" as such on the rear of the MR2. Is it standard ride height?

Worth tracking down somewhere with a Hunter alignment rig.
http://www.alignmycar.co.uk/

No, it's definitely adjustable. Yep, standard underneath.

Not without using different bolts or aftermarket camber adjustment arms (unless yours has these already).

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Toe is much worse for tyre wear than camber. I'd imagine the standard setup is a fair bit of toe-in to calm the DANDEROUS RWD, so they will wear unevenly in a straight line. Just drive it harder around the bends to even it out! Or get it tracked and dial out some toe. It might get a bit lairy then though.

Updated May 6, 2012 at 1:16 PM

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Cheers,
Mike

Yep it's adjustable. I had precisely zero toe on mine, the tyres wore evenly but I only got 5k out of every set

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and so it begins...

Too many roundabouts in Swindon have caused this problem on mine

Your alignment may well be out Zonda, isn't yours crash repaired?

caneswell said...

Toe is much worse for tyre wear than camber. I'd imagine the standard setup is a fair bit of toe-in to calm the DANDEROUS RWD.

But toe-in will wear the outer edges.

Sounds like excessive neg camber to me (can you see it with your eye?)

speedingfine said...

Too many roundabouts in Swindon have caused this problem on mine

Your alignment may well be out Zonda, isn't yours crash repaired?

Yes but that was front damage, now I've looked closer the passenger side is much worse than the drivers.

mik said...

caneswell said...

Toe is much worse for tyre wear than camber. I'd imagine the standard setup is a fair bit of toe-in to calm the DANDEROUS RWD.

But toe-in will wear the outer edges.

Sounds like excessive neg camber to me (can you see it with your eye?)

I dunno, what will the wheel be doing, leaning in excessively?

A slight amount of neg camber

I'm currently having this exact same problem with my Puma. I put 4 brand new tyres on in December, car goes for an MOT in March and gets an advisory on the passenger rear tyre after about 3500 miles, I never noticed it as it's on the inside. And Puma's are non adjustable so I'm not sure what to do either.. My Ford mate is going to replace the bushes and see if that makes any difference

Updated May 6, 2012 at 2:32 PM

Mik, I'm sure that Crown is still within factory specs. If it looks like this then you might be suffering excessive tyre wear:

(Image credit NoriYaro).

Front tires on the Volvo were unevenly worn not so long ago, and i had it checked out. The front suspension was found to be on the verge of collapse, meaning that the wheels were leaning in, causing the inside of the tires to get severely worn. the drivers tyre inside was down to the canvas when they were taken off, but the outside had a good 5mm tread depth left!

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mik said...

caneswell said...

Toe is much worse for tyre wear than camber. I'd imagine the standard setup is a fair bit of toe-in to calm the DANDEROUS RWD.

But toe-in will wear the outer edges.

Sounds like excessive neg camber to me (can you see it with your eye?)

Not always, if it's got a bit of camber too it could still be dragging the inner edge.

If he had toe out at the rear he'd definitely know about it

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Cheers,
Mike

Re: crash damage, was it the passenger side that was hit? Could be a bend in something.

Oh and how have we got this far into the thread without someone mentioning tyre pressures; over and under inflation?

Orange Cola said...

Re: crash damage, was it the passenger side that was hit? Could be a bend in something.

Oh and how have we got this far into the thread without someone mentioning tyre pressures; over and under inflation?

Passenger side front damage, front tyres are wearing fine. Pressures are Ok, I read when I got it that they are very sensitive to tyre pressure.

Original rear springs or shortened/cut?

Toe out or Neg camber do this as mentioned.

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All standard as far as I know although Mark BT_52 thought the ride height looked high.