Author Topic: Tyre wear  (Read 385 times)

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Offline Jepwee

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Tyre wear
« on: November 13, 2020, 17:06:32 PM »
Hi, had the car MOT'ed on Monday ,all OK apart from wear on the rear n/s tyre inside edge. Checked shock absorber OK ,large sub frame  bush OK, wheel bearing and all lower arm bushes tight. The fronts and o/s rear tyres are OK and the car has not been in an accident or hit a kerb. Has anybody had this before this type of wear before.?

Many thanks

Offline Jepwee

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Re: Tyre wear
« Reply #1 on: November 14, 2020, 20:21:25 PM »
Hi , reading through many threads this seems a common problem but know one has an answer. Is it the trailing arm bushes worn or the large bush that connects sub frame brace to the sub frame. The car has not been lowered so the camber/toe in are factory. Interested in your comments.
 Many thanks

Offline Jepwee

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Re: Tyre wear
« Reply #2 on: November 17, 2020, 20:31:36 PM »
Hi, as I have had no answer to help me with the problem I have decided to change the n/s trailing arm bushes. Today I lowered and refitted  the rear subframe just enough to reverse the outside trailing arm bolts to make it easier to fit the ordered bushes without having to drop the subframe to the floor.
 Many thanks

Offline Jepwee

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Re: Tyre wear
« Reply #3 on: November 20, 2020, 17:06:53 PM »
Hi, still waiting for the rear bushes, 176 views and no comment ?

Offline agw9262

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Re: Tyre wear
« Reply #4 on: November 21, 2020, 08:49:53 AM »
Hi

Can’t say that I have a solution for you as such but it is common, partly due to the negative rear wheel camber on the calibra. If the car is lowered then the problem is amplified. It can be adjusted, to try to bring it closer to zero but not normally possible to reach zero.

Replacing bushes might help somewhat but if you want to really change it and alter the camber, especially if lowered, then you’ll need a bush kit that lets you do that - like this one:

https://www.powerflex.co.uk/products/Cavalier-Calibra+4WD+inc+GSi+with+independent+rear+suspension,+Vectra+A+(1989-1995)-736/1.html

Hope that helps
Andrew


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Offline Jepwee

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Re: Tyre wear
« Reply #5 on: November 21, 2020, 12:26:27 PM »
Hi Andrew, many thanks for the reply, I was beginning to think I was the only person on this planet. Using a spirit level ( I know its not accurate ) I found the top of the tyre leaning in by 5mm so as you say a camber issue. I have seen the adjustable bushes you mention but as my car is not lowered I hoping the new bushes will restore factory settings. I am still waiting for the new bushes to arrive via e-bay. These I think are getting a bit scarce as I tried 3 times from different suppliers to get mine. When I change them I will update you on there condition to see if that was the problem.
Many thanks again. 

Offline electric geen

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Re: Tyre wear
« Reply #6 on: November 22, 2020, 18:02:53 PM »
If all your bushes on the rear are 25 years old plus original springs, probably best to replace them all and repaint the rear subframe while your in there. Replacing a bush here and there is just going to push the problem to the next weakest link. I have recently done the whole lot on mine plus all the front ones too - makes a hell of a difference as to how it used to ride.

Offline Jepwee

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Re: Tyre wear
« Reply #7 on: November 23, 2020, 12:47:00 PM »
Hi,
 Thanks for the reply, I do agree with your assessment about changing all bushes, however as the o/s rear tyre is not showing any wear I am using this as a bench mark and not mudding the waters by changing all bushes. As an aside, last year I changed the large sub frame bushes from Vauxhall ( cost arm and leg ) When done I will take it to have it laser tracked if OK I will do the o/s bushes. As for the sub frame the car has been garaged for most of its life ( I have owned it for 20 years) is in good condition, but will paint the trailing arm when removed.

Offline electric geen

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Re: Tyre wear
« Reply #8 on: November 23, 2020, 20:49:28 PM »
Check these people out, I have bought the rears in red version which is similar to the current bushes, pretty cheap (especially compared to the UK sourced versions) and the Alfa boys buy them all the time (they have to - it's an Alfa thing....). The rear hangers are not available anymore so polyurethane is now the only option.

https://www.strongflex.eu/en/

Offline Jepwee

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Re: Tyre wear
« Reply #9 on: Yesterday at 15:05:03 »
Hi, Electric green.
 Many thanks for the info on poly bushes but I decided to use standard bushes , a however I did consider using them as they seem easier to fit than the standard bush which at the moment there seems no tool around to remove or fit. There is a tool for Vectra's rear 45mm 'rose' bush, same size as the Calibra's trailing arm bush but as there not a lot of 'meat' around the bush housing the tool has to be a dead fit.
 Many thanks