Tyres

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Digel

Member
Posts
56
Location
Ballymena N/Ireland
Hi

What could be causing my front passenger tyre is blading on the out side. Approx 12 months ago tyres were fitted balanced and aligned and now the front passenger has worn on the outside enough to need replaced before MOT. Drivers tyre is perfect showing normal wear and no balding on the inside suggesting aliment.

Any thoughts greatly appreciated.

2001 P38A 4.0
 
Digel said:
Hi

What could be causing my front passenger tyre is blading on the out side. Approx 12 months ago tyres were fitted balanced and aligned and now the front passenger has worn on the outside enough to need replaced before MOT. Drivers tyre is perfect showing normal wear and no balding on the inside suggesting aliment.

Any thoughts greatly appreciated.

2001 P38A 4.0
Click to expand...

NSF tyres suffer heavy shoulder burn from the nature of roundabouts over here. Its perfectly normal for them to wear quicker on the outside edge then any other tyre but unfortunately, especially on these to save the viscous you need to change both front tyres. Swapping them round every now and again (incl the rear) to even the wear may help you. The weight transferring to that nsf wheel in a RR with soft air suspension is quite substantial on a roundabout, especially with increased speed. If you have cheaper tyres on they wont last long either. I have bridgestone duelers (£230 each!) and only now after 3 years and 30oddk is the front starting to show increased wear - Be time to have a rotate a round soon.

Taxi/minicab drivers suffer from this the most...have a look at their nsf tyres next time you pass one! Don't let the above info give you false sense of security either though, as above, check bearings and other suspension components to.
 
Last edited:
Rotating tyres every 10K miles will add another 20% to their life as they'll wear more evenly. I usually rotate opposite corner to opposite corner (ie fr/l to r/r) - dunno if that's the right way but it seems to work for me.
 
StuckAgainSteve said:
Rotating tyres every 10K miles will add another 20% to their life as they'll wear more evenly. I usually rotate opposite corner to opposite corner (ie fr/l to r/r) - dunno if that's the right way but it seems to work for me.
Click to expand...

This was done as a matter of course on services at one time. If you have non rotational tyres it pays to do this. However rotational tyres can only be swapped back to front. Not diagonally.
 
aerofabrique said:
NSF tyres suffer heavy shoulder burn from the nature of roundabouts over here. Its perfectly normal for them to wear quicker on the outside edge then any other tyre but unfortunately, especially on these to save the viscous you need to change both front tyres. Swapping them round every now and again (incl the rear) to even the wear may help you. The weight transferring to that nsf wheel in a RR with soft air suspension is quite substantial on a roundabout, especially with increased speed. If you have cheaper tyres on they wont last long either. I have bridgestone duelers (£230 each!) and only now after 3 years and 30oddk is the front starting to show increased wear - Be time to have a rotate a round soon.

Taxi/minicab drivers suffer from this the most...have a look at their nsf tyres next time you pass one! Don't let the above info give you false sense of security either though, as above, check bearings and other suspension components to.
Click to expand...

At £230.00 each you must have some silly sized wheels on then.
 
wammers said:
So you fitted the wrong tyres, proper ones are £50-£60 less than that. Should be 255/55/18 on 8.00 J rim. Your speedo will be out and track will need resetting. Does it wander a bit?
Click to expand...

These were the ones the previous owner had on and I just kept them as such. One tyre with a slow puncture would have meant replacing an entire set to save the viscous for the sake of going back to 55,55. Doesn't wander at all since i did the shocks and bushes however speedo does overread by 3/4mph. It actually is now in line with the GPS reader so 30mph on the speedo means 30mph in reality. Should mention they are l322 wheels to
 
Last edited:
aerofabrique said:
These were the ones the previous owner had on and I just kept them as such. One tyre with a slow puncture would have meant replacing an entire set to save the viscous for the sake of going back to 55,55. Doesn't wander at all since i did the shocks and bushes however speedo does overread by 3/4mph. It actually is now in line with the GPS reader so 30mph on the speedo means 30mph in reality. Should mention they are l322 wheels to
Click to expand...

Ok with those on speedo should be under reading slightly. See this. Visual Tyre Size Calculator | Kouki Tech Unless you are on a dead flat straight road GPS speed means nothing.
 
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