Tyre problem please help

Submitted: Sunday, Aug 14, 2011 at 12:41
ThreadID: 88462 Views:1822 Replies:5 FollowUps:3
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The tyres on my ford fairmont au areDUNLOP SP SPORTS 200E
215- 6O -R16 95v
I am currently towing a van 16OO to 18OO KG
The car tyes are wearing in the center
Specialy the rear ones
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Reply By: Mudripper - Sunday, Aug 14, 2011 at 13:00

Sunday, Aug 14, 2011 at 13:00
Over inflation of tyres?

Static imbalance of the wheel and tyre?

Radial runout (eccentric wheel)?

Only things that come to mind...


AnswerID: 462561

Follow Up By: chris a - Sunday, Aug 14, 2011 at 13:26

Sunday, Aug 14, 2011 at 13:26
I am runing 36 psi in th rear and 34 in the frount
The wear is all the way round
DO the wider tyres tend to wear more in the center
IF I drop the pressure 2lb in the rear tyes I HOPE IT WILL SAFE
FollowupID: 736365

Follow Up By: Dennis Ellery - Sunday, Aug 14, 2011 at 13:50

Sunday, Aug 14, 2011 at 13:50
Comparing two different tyres with the same pressure and same load - then either the wider tyre will be overinflated and wear in the middle or the thinner tyre will be under inflated and wear on the outside. Use the 4PSI rule for sedans and 6PSI rule for 4WD and light commercials.
FollowupID: 736367

Reply By: rescue134 - Sunday, Aug 14, 2011 at 13:14

Sunday, Aug 14, 2011 at 13:14
Chris problem on the ford is rear end alignment and sagged with suspension, easy fix is alignment and fit a set of level riders. your local caravan dealer should be able to help.
AnswerID: 462562

Follow Up By: Madfisher - Sunday, Aug 14, 2011 at 13:26

Sunday, Aug 14, 2011 at 13:26
THat would cause them to wear on the outside. Au did not have independent rear suspension so that leaves over inflation. Also rotate your tyres more often.
Cheers Pete
FollowupID: 736364

Reply By: kidsandall - Sunday, Aug 14, 2011 at 15:20

Sunday, Aug 14, 2011 at 15:20
Would it not be better to take it to someone qualified to look at. Everyone on hear is only guessing as they can't see the vehicle or check any components. To save the cost of replacing tyres (if not to late already) take it in to get checked. There are so many variables with tyre wear.

AnswerID: 462571

Reply By: splits - Sunday, Aug 14, 2011 at 21:46

Sunday, Aug 14, 2011 at 21:46

Smooth even wear in the centre is over inflation. Any other type of wear can be caused by balance, shocks, bent axles, alignment etc.

In any situation like this it is always worth a phone call to the tyre manufacturer. They usually have a free customer information number on their web site so why not use it. Discuss not only the wear but pressures as well. They should be able to tell you how much weight a certain pressure will support.

One thing I always do when concerned about wear patterns is heat the head of a small nail to red hot and put a row of very shallow burn marks right across the tread. By watching which ones wear first you can usually detect uneven wear long before it shows up by sight or with a tread depth gauge.
AnswerID: 462617

Reply By: Member - DOZER- Monday, Aug 15, 2011 at 19:22

Monday, Aug 15, 2011 at 19:22
I am going to go against the grain here, wear in the middle of the tyres is initial under inflation. Heat generated from sidewall flex from too little air to begin with causes pressure to climb too much when running, and subsequently wears the middle of the tread. Have a read of the sidewall of the tyre and it will tell you max pressure for max weight. Try a few psi lower.
The correct way to work out what you need is to measure cold, and hot, and if hot equals more than 4 psi increase, you need to increase cold inflation pressure. If less than 4 psi increase, then decrease cold starting point.
If you dont have levellers yet, get them. They put weight back on the front wheels for braking and steering.
AnswerID: 462677

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