Really sorry but its a tyre question

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A

Alexander Henry

New Member
Posts
20
Location
Frome, Somerset
Hi all

Thanks and apologies in advance.

Had some uneven wear in the inside of each front tyre and was starting to be on the bald side. Times are hard and I couldn't afford A/T's all the way round which is what I would prefer. My back tyres are road based as were my fronts. They still have tons of tread left.

My cunning plan was to put A/T's on the rear and switch my back roadies to the front. Then buy two more A/T's next time. But the garage refused to do it said the car 'wouldn't stay on the road'.

Now I don't class myself as an idiot (I’m sure I’ll be proved wrong). I don't see how have the two different tyres would of made a difference to having A/T's all round. Surly the level of grip they provide would be the same either way regardless of what tyres are on the front.

Tracking was tested and came back spot on, what else can cause inside tyre wear. Pressures all ok I check them weekly.


Many thanks in advance.
 
Providing the tyres are the same on each axle, then there shouldn't be a problem.

My Transit has 195's on the rear and 185's on the front. Passed an MOT 3 times like it.
 
I might be wrong, but there used to be something about the front of the vehicle being able to corner better than the rear which can cause it to go into a slide. Your road based tyres would probably give better grip on public highways therefore this could be a problem if you pushed it into a corner. This might be why he refused to fit them.
Did you not ask him for an explanation of his reasons?
 
I always went with the "same axle,same tyre" thing but was told recently that due to the centre diff,on D1 at least,that they should be the same all round.But I am still running front and backs different as before.Would like to know whats right though.
 
I think what I was referring to was from a long long time ago when we could still buy cross-ply tyres. You weren't allowed to fit radials to the front and cross-plies to the rear, but you were wllowed them the other way round. Mixing tyres on the same axle is a definite no-no, so maybe, just maybe it would apply to 4x4's since the centre diff can be locked?

I don't doubt that someone will come along with the definitive answer soon enough.
 
I had allterains on the front and road tyres on the back on my shogun lwb and did a 3000 mile round trip to the south of France fully loaded with all our camping gear. Never had a minutes trouble so I'd find another tyre fitter or just take the wheels to him and then he can't refuse to fit them cos you'll have no other tyres to compare them to.
 
I'm a mechanic working for one the largest tyre companys in uk. Dexel tyres not kwik fit, fitted tyres for over 6 years. With 4x4 's as a rule we only fit same size allround, even if customer insists we will refuse. As for fitting different tread patterns Aslong as there same size is fine. I wouldnt recommend mixing corner to corner, similar tread Pattern on each axle. And can't mix radial with x plys
 
From the horses mouth,excellent,nice one mate !

However,if it isnt a problem having axle matched pairs....what is the reasoning behind the policy of only fitting the same all round? Very interested to know and you seem to be the bloke who would be able to explain it best.
 
Say uve got a disco running 235/70/16, and ur wanting to put 245/70/16 on back. It would screw up the transfer box as the rolling circumference is different to those in the front. What I meant about mixing corner to corner is. Your everyday m&s budget will have less tread than a bfg at2. Always best to have similar tread and tread depth on each axle. Many years ago at an another depot an apprentice fitted wrong size on back of a disco a week later the company replaced the transfer box free of charge
 
disco2shaun said:
Say uve got a disco running 235/70/16, and ur wanting to put 245/70/16 on back. It would screw up the transfer box as the rolling circumference is different to those in the front.

err maybe a typo but that statment is wrong,235/70-16 has exactly the same rolling circumfrence as 245/70-16,the only difference is there 10mm wider ;)
Click to expand...
 
halo said:
disco2shaun said:
Say uve got a disco running 235/70/16, and ur wanting to put 245/70/16 on back. It would screw up the transfer box as the rolling circumference is different to those in the front.

err maybe a typo but that statment is wrong,235/70-16 has exactly the same rolling circumfrence as 245/70-16,the only difference is there 10mm wider ;)
Click to expand...


Wrong.
70% of 245 is more than 70% of 235 (the second figure in tyre sizes means the sidewall height as a percent of the width). Rolling diameters are 235/70-16 =73.54cm and 245/70-16 =74.94cm
Click to expand...
 
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