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19th November 2021, 00:52 | #21 | |
Gets stuck in
Rover 75 Tourer CDTi Join Date: Jun 2017
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Quote:
I had a very lightly worn tyre I took off a spare set of wheels I bought for fitting winter tyres on. I kept it in storage and when I recently had a puncture I got it fitted, hence mismatch for MOT. I understand the arguments about grip and handling, but good tread on the rear end, with sensible driving I can't see how much difference a mismatch on the rear axle of a front wheel drive car will make? I would always want a matching pair on the front, and get my new ones fitted there despite tyre fitters always wanting to put them on the back. Can't understand why you wouldn't want the best grip on the front where all the steering, traction and most of the braking happens. |
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19th November 2021, 11:49 | #22 | |
This is my second home
R75 Saloon. Join Date: Feb 2009
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19th November 2021, 11:59 | #23 |
This is my second home
ZT260 #243 (resting) Join Date: May 2010
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Copied from the Goodyear website:
Installing Tires on the Rear Axle When tires are replaced in pairs, the new tires should always be installed on the rear axle, and the partially worn tires should be moved to the front. Driving with new tires on the rear axle can help the vehicle to maintain control on wet roads because the tires with deeper treads are more likely to resist hydroplaning. When front tires have less tread than the tires on the rear axle, the vehicle is generally considered easier to control, since sliding would likely be the result of an understeer –which is easier for the driver to control by decreasing throttle. If worn tires are placed on the rear axle and a slide occurs, it’s likely the result of an oversteer (where the rear of the vehicle continues to move straight ahead). Oversteering is generally harder to recover from and decreasing throttle may actually amplify the negative effects of the oversteer. |
19th November 2021, 16:12 | #24 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Protyre: mixing different tread patterns
Quote:
I will report further if I receive a response. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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19th November 2021, 19:06 | #25 | |
This is my second home
MG ZT CDTi Join Date: Jan 2014
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Quote:
Their title states, Don’t mix tyres across the same axle – it’s dangerous, and can be illegal. - this is true if crossply and radials are mixed (fails the MOT, therefore not roadworthy, ergo illegal) - the word can is powerful here. Later on though it states, Can I mix different tyre tread patterns? No. Mixing different tread patterns across the same axle is not allowed. The identical tyre model and tread pattern must be fitted for a single axle. You can, however, use different tyres on a separate axle – just as long as they too match each other. (as mentioned from Macafee's post). Whilst legally and practically, this is not accurate, HOWEVER, their business practice appears to be cynically hoping that an ignorant motorist will take it to mean illegal. They are simply stating they will not allow their employees to fit mismatched tyres on the same axle, hinting it to be a safety issue. But they are NOT claiming it to be illegal or an MOT failure because of this, they are simply stating that they do not allow it . To me it is simply greedy business practice, designed to maximise turnover - in the same vein as an MOT 'check' by certain garages will throw up 'phantom' faults and issues, for the ignorant or nervous motorist. Trading standards would be the port of call for that one, for misleading safety information for financial gain.
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It is not gloss primer .............. it is duct tape silver! |
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20th November 2021, 08:02 | #26 | ||
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Quote:
"We have brought this to the attention of the relevant team. They will look into this matter and make any changes necessary." Quote:
I agree with nearly all your analysis but concerning the above, whilst Protyre says that it is "not allowed", they do not reveal by whom. You are assuming that it is the company's own decision but that is not clear. A reader could equally be frightened by their statement, reaching a different assumption that it is a legal requirement. When I raised this with Protyre they referred me to the DVSA MOT manual. That suggests that they consider it to be grounds for an MOT failure although they do not clearly state that in their claim. The easy way out would have been to take responsibility themselves as you have assumed is the case, but they did not do that. When I pointed out to them that there is no such requirement in the MOT manual, Protyre had the opportunity to say that actually it is their own company policy not to fit different tread patterns on the same axle. They did not do this either. I therefore don't see any evidence that their claim is company policy. As you say, it is misleading statement which will have the effect of increasing sales. We'll have to see if they make any corrections. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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20th November 2021, 14:36 | #27 | |
This is my second home
MG ZT CDTi Join Date: Jan 2014
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Quote:
It is not an untrue statement, but an unfair one - which is why I suggested trading standards.
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It is not gloss primer .............. it is duct tape silver! |
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21st November 2021, 14:30 | #28 | |
Gets stuck in
75 Join Date: Mar 2013
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21st November 2021, 14:46 | #29 | |
Gets stuck in
75 Join Date: Mar 2013
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Quote:
On economy grounds, front and rear tyres usually wear at different rates, so changing all four together needlessly is not something most of us can justify. I haven't had a traction/steering problem for about 48 years when my youthful exuberance, a patch of ice and lack of experience saw me doing an uncontrolled exotic dance and unskilled reverse into bushes, in my Mk2 Consul |
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21st November 2021, 15:29 | #30 | |
Give to Learn
Freelander 2 Join Date: Aug 2010
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Quote:
Advisory notice item(s) n/s/r tyre speed rating different to rest So speed rating must be the same otherwise you will get an advisory on the MOT.
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