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Topic: rear tyre problem (Read 1448 times) |
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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rear tyre problem
« on: Sep 11th, 2006, 2:01pm » |
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noticed that the rear tyres are wearing out on the inside
is this a normal scorp issue?
did have to have 2 new tyres on frount as they had worn out on the inside but they said the tracking was out quite a lot so had that done along with 4 wheel aliment etc at that time the back tyres were still very good and it wernt 2 many weeks ago .
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Waglet
Full Member
Aubergine 24V
Posts: 209
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Re: rear tyre problem
« Reply #1 on: Sep 11th, 2006, 6:52pm » |
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Imperative to keep the tyre pressures right. I read through the forums a week or so ago and someone recommends 31 rear 28 front. Yours have not been over inflated have they?
Wag
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Waglet
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #2 on: Sep 11th, 2006, 7:44pm » |
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possible been putting in 31 all round
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: rear tyre problem
« Reply #4 on: Sep 11th, 2006, 9:27pm » |
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& also if you carry heavy loads alot, tow alot or if the rear springs have aged & the ride height is too low.
Under inflation will wear both outside, over inflation just the middle.
If both tyres are the same, it points to ride height to low 
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Dave
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #5 on: Sep 11th, 2006, 9:31pm » |
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thanks highlander. noticed that the black casing around the rear spring (looks like a dounut)has a split in it could that be any thing to do with it?
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #6 on: Sep 11th, 2006, 9:36pm » |
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on Sep 11th, 2006, 9:27pm, howiedintheplace wrote:& also if you carry heavy loads alot, tow alot or if the rear springs have aged & the ride height is too low.
Under inflation will wear both outside, over inflation just the middle.
If both tyres are the same, it points to ride height to low |
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yes both are the same the inside worn! ,springs then .how much are they each or a pair ?
dont carry heavy loads or do towing
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: rear tyre problem
« Reply #7 on: Sep 11th, 2006, 9:38pm » |
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You mean the spring seat or cushion.
Depends the seat is meant to form a acoustic cushion but also creates about a inch gap between the spring & the body so if that gap is not there your car sits about a inch lower & would wear the innner tread of the tyres.
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Dave
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #8 on: Sep 11th, 2006, 9:46pm » |
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it do look a little low , if its lower than it should be would it throw out the camber angle of the tyres
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: rear tyre problem
« Reply #9 on: Sep 11th, 2006, 10:05pm » |
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Yeah that's it.
Measure the distance between the top of the arch & the centre of the wheel on flat ground then compare it to others on here.
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Dave
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #10 on: Sep 11th, 2006, 10:44pm » |
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ok will do tomorrow and let you know
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mr._floppy
Junior Member
Posts: 100
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Re: rear tyre problem
« Reply #11 on: Sep 12th, 2006, 10:02am » |
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I can't see the rear ride height ( a figure Ford keep to themselves , a indication of its importance ) being too low by an inch causing recognisable uneven tyre wear.
The trailing arm system on the rear doesn't produce serious Negative camber when overloaded or when the springs are droopy. ( Rear spring replacement is a major job judging by the information of this site ).
Rear Bearing or trailing arm Bush wear is a possibility
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: rear tyre problem
« Reply #12 on: Sep 12th, 2006, 12:10pm » |
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Ride height is very important for cars fitted with this type of rear suspension.
Thousands of Sierra & granada owners will know only to well.
As the car gets lower the top of the tyre goes in creating the camber problems.
On the rear of my car I have made the rear suspension adjustable for camber, toe, track, ride height & wheelbase 
Yes bushes can cause it but if the car looks low it's usally camber.
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Dave
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #13 on: Sep 12th, 2006, 4:44pm » |
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got the tape out, and from top of arch to middle of wheel it measured 13 inches what should it be ?
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howiedintheplace
Senior Member
Based near Evesham
Posts: 1194
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Re: rear tyre problem
« Reply #14 on: Sep 12th, 2006, 6:52pm » |
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More than that, some kind soul needs to measure their car to see what a known good one should be.
A Scorpio wheel is about 2 foot across so your saying you only have a inch clearence between the top of the wheel & the arch?
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Dave
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #15 on: Sep 12th, 2006, 7:06pm » |
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yes its only a inch clearence. would any body happen to know what its ment to be?
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: rear tyre problem
« Reply #17 on: Sep 14th, 2006, 5:36pm » |
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Don't know what it should be, but my 2.3 measures the same as yours, I run the same pressures as you, I'm getting fairly even wear on all tyres (my front tyres were wearing on the sides before upping the pressures).
Dave
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ABS multiplug wheel sensor pins MK IV or MK 20
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bootiful-scorpios
Full Member
ex 2.9 24v
Posts: 560
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Re: rear tyre problem
« Reply #18 on: Sep 14th, 2006, 5:50pm » |
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hi dave thanks for reply , did your frount tyres wear on the inside ? like ours did ,
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: rear tyre problem
« Reply #19 on: Sep 14th, 2006, 5:57pm » |
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Hi
The fronts were wearing inside & out ie typical low pressure wear.
Dave
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ABS multiplug wheel sensor pins MK IV or MK 20
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