Blown tyre

[Dafydd_Cymru]

CODE RED MAN DOWN LOL On the way to Scotland slight short wobble and. RAC on the way. Thank God for full spares Hope axle is OK.

 

[PP Bear]

Glad you're ok, well apart from an undies change.

How old was the tyre and what brand please.

 

[Dafydd_Cymru]

Brand new tyre...not sure of make i think its Avlon...500miles or so..All part of the joys. Nice scenery.

 

[34127]

I would be wanting to know why it happened and be worried about your other tyres. The last time I saw a tyre like that it was on a lorry and was a retread.

 

[SpeedyDux]

More proof if it were needed that the manufacturers' can of goo substitute for a spare wheel is a con.

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[Dafydd_Cymru]

I agree never going out without a real wheel. 2.5 hours no RAC to check it....and I'm a priority im told.

 

[jockaneezer]

Unusual for it to fail like that, looks like the sidewall hasn't bonded properly to the bead during manufacture ? I'd be taking it back to the supplier.

 

[Jimbohorlicks]

Brand new tyre...not sure of make i think its Avlon...500miles or so..All part of the joys. Nice scenery.

Just out of curiosity I checked on line for avlon tyres, found avon tyres, made in the UK. A reputable tyre manufacturer, but they don't make tyres for motorhome and in fact issue a warning that their tyres are unsuitable for use on motorhomes. Please check the make of your tyres and check out the Avon website. Not sure how to do links otherwise would have put it up.

 

[Boringfrog]

Definitely gonna fit my TPMS.

 

[Jimbohorlicks]

Found and managed to copy the link to avon tyres, not sure if this is applicable to the op or not.

Improper Use on Caravans

www.avontyres.com

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[Deneb]

Unusual for it to fail like that, looks like the sidewall hasn't bonded properly to the bead during manufacture ? I'd be taking it back to the supplier.

Looks like typical overloading or underinflation damage to me. Difficult to be precise without a physical inspection, and the photo isn't of the highest resolution, but there appears to be a lot of rubber swarf and scrabbling inside the carcass from what can be seen to the lower left of the wheel, which is typical of the inner sidewalls rubbing against themselves.

I'm not suggesting that the van was overloaded or that the tyre was underinflated at the start of the journey, but a slow puncture such as caused by debris in the tread could result in the same outcome if the driver hadn't noticed the pressure drop during the course of the journey.

The vehicle itself may well be within its maximum load capability, but as the pressure in a tyre decreases its load capability decreases also, which leads to overheating and possible structural failure. Once you get to the point where the internal walls of the carcass start rubbing together, often only during cornering at first, structural damage and overheating will happen quite quickly.

 

[Next Stop]

Found and managed to copy the link to avon tyres, not sure if this is applicable to the op or not.

Improper Use on Caravans

www.avontyres.com

Just for curiosity, what would make a commercial tyre unsuitable for a motorhome?

 

[g3cwi]

Just for curiosity, what would make a commercial tyre unsuitable for a motorhome?

A tendency to explode?

 

[Next Stop]

A tendency to explode?

But in seriousness, how does a tyre differ if you are carrying 500 parcels from amazon or a thetford toilet and a bed?

 

[Deneb]

Just for curiosity, what would make a commercial tyre unsuitable for a motorhome?

ETRTO industry guidance is that CP type tyres should be fitted to motorhomes and they are recommended beacause "overloading is generally the main cause of tyre failure, due to the fact that this type of vehicle often carries an excessive or badly distributed load, which, may be higher than that permitted by the load index (LI) of the tyre; usually on tyres fitted to the rear axle.

CP-type tyres have been designed to cater for the higher loads imposed by motor-caravans, especially when fitted in single formation on the rear driven axle.

The LI designation of CP-type tyres carries a single “load index” indicating their normal use in single fitment. In this case only, tyres on the rear axle have to be inflated to 550 kPa, (to compensate for severe conditions of unequal load distribution, but with no further concession to increase the maximum load capacity).

For these reasons, it is strongly recommended that motor-caravans are only fitted with CP-tyres."

Panel van conversions based on a type-approved commercial vehicle design often have the original commercial tyres fitted, which shouldn't be an issue provided that the vehicle remains within the original manufacturer's design limits. Modification of bare chassis or back to back cab conversions involve processes which are outside of the original manufacturer's control, with the potential for a much different load distribution to that intended in the original base vehicle design, with designated internal storage areas and garages positioned towards the rear of sometimes quite large overhangs, the locations having more to do with habitation design than load distribution within the vehicle.

So Avon are just following industry guidance and confirming their position in advance for the information of prospective customers.

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[Next Stop]

ETRTO industry guidance is that CP type tyres should be fitted to motorhomes and they are recommended beacause "overloading is generally the main cause of tyre failure, due to the fact that this type of vehicle often carries an excessive or badly distributed load, which, may be higher than that permitted by the load index (LI) of the tyre; usually on tyres fitted to the rear axle.

CP-type tyres have been designed to cater for the higher loads imposed by motor-caravans, especially when fitted in single formation on the rear driven axle.

The LI designation of CP-type tyres carries a single “load index” indicating their normal use in single fitment. In this case only, tyres on the rear axle have to be inflated to 550 kPa, (to compensate for severe conditions of unequal load distribution, but with no further concession to increase the maximum load capacity).

For these reasons, it is strongly recommended that motor-caravans are only fitted with CP-tyres."

Panel van conversions based on a type-approved commercial vehicle design often have the original commercial tyres fitted, which shouldn't be an issue provided that the vehicle remains within the original manufacturer's design limits. Modification of bare chassis or back to back cab conversions involve processes which are outside of the original manufacturer's control, with the potential for a much different load distribution to that intended in the original base vehicle design, with designated internal storage areas and garages positioned towards the rear of sometimes quite large overhangs, the locations having more to do with habitation design than load distribution within the vehicle.

So Avon are just following industry guidance and confirming their position in advance for the information of prospective customers.

Everyday's an education! Thanks for this

 

[Polar bear]

Had a new front tyre blowout at 60 mph in Spain and six months later a rear blowout on m5 have since fitted tyrepal sensors which is great for peace of mind.

 

[robrace]

Just had new tyres fitted to my van! Old ones hankook and still like new but 10 years old.Even tyre fitter was impressed with them but said sometimes they crack between the treads but no sign of deterioration! Only problem was getting van high enough to get rears off.Even if I could lower spare from its storage underneath I don’t think at 75 I have the strength to drag it out from underneath and change it myself!!

 

[Jaws]

Just for curiosity, what would make a commercial tyre unsuitable for a motorhome?

I happen to know this.... Having had close tyes with Avon for the past 18 years
It is nowt nasty really
Their tech guy said it is because when fitted on caravans or motorhomes it is common for them not to be used regularly, due to the way they are constructed, they can and do distort.. So nowt to do with blow outs as such

 

[Boringfrog]

But in seriousness, how does a tyre differ if you are carrying 500 parcels from amazon or a thetford toilet and a bed?

I doubt a fully loaded parcel van would be at its max limit, and if it was it would be empty after 8 hours, a Motorhome is, or can be at it's max most of the time.

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[SpeedyDux]

I happen to know this.... Having had close tyes with Avon for the past 18 years
It is nowt nasty really
Their tech guy said it is because when fitted on caravans or motorhomes it is common for them not to be used regularly, due to the way they are constructed, they can and do distort.. So nowt to do with blow outs as such

Due to problems sourcing new Conti Vancos, I got a pair of Avon van tyres fitted to the front wheels of our previous VW T4 Westy. This van was used regularly and never left standing for longer than a week. I didn't have any problems with the Avons. I got the impression that they had better grip in very cold conditions than the Contis. I know a T4 camper at 2800 Kg MTPLM is lighter than most MHs but the Avon is a good commercial van tyre, suitable for regular use with full loads.

I'm not a fan of Michelin Camper ones due to the stiff ride.

 

[Jaws]

Due to problems sourcing new Conti Vancos, I got a pair of Avon van tyres fitted to the front wheels of our previous VW T4 Westy. This van was used regularly and never left standing for longer than a week. I didn't have any problems with the Avons. I got the impression that they had better grip in very cold conditions than the Contis. I know a T4 camper at 2800 Kg MTPLM is lighter than most MHs but the Avon is a good commercial van tyre, suitable for regular use with full loads.

I'm not a fan of Michelin Camper ones due to the stiff ride.

I really like Avons in general, and although advised not to use them by the Avon rep, have 4 o the back of the Chieftain without issue
I will ONLY have Avons on my bikes.....

 

[2657]

ETRTO industry guidance is that CP type tyres should be fitted to motorhomes and they are recommended beacause "overloading is generally the main cause of tyre failure, due to the fact that this type of vehicle often carries an excessive or badly distributed load, which, may be higher than that permitted by the load index (LI) of the tyre; usually on tyres fitted to the rear axle.

CP-type tyres have been designed to cater for the higher loads imposed by motor-caravans, especially when fitted in single formation on the rear driven axle.

The LI designation of CP-type tyres carries a single “load index” indicating their normal use in single fitment. In this case only, tyres on the rear axle have to be inflated to 550 kPa, (to compensate for severe conditions of unequal load distribution, but with no further concession to increase the maximum load capacity).

For these reasons, it is strongly recommended that motor-caravans are only fitted with CP-tyres."

Panel van conversions based on a type-approved commercial vehicle design often have the original commercial tyres fitted, which shouldn't be an issue provided that the vehicle remains within the original manufacturer's design limits. Modification of bare chassis or back to back cab conversions involve processes which are outside of the original manufacturer's control, with the potential for a much different load distribution to that intended in the original base vehicle design, with designated internal storage areas and garages positioned towards the rear of sometimes quite large overhangs, the locations having more to do with habitation design than load distribution within the vehicle.

So Avon are just following industry guidance and confirming their position in advance for the information of prospective customers.

So basically they are saying that motorhomes and caravans are regularly overloaded and the drivers are thus breaking the law. Seems an odd way to formulate recommendations and warranty rules to me.
A tyre is designed with a maximum load rating, commercial vehicles are regularly run near to this limit, I would have thought that overloading a tyre would negate any warranty if it could be proven.
The matter of motorhomes being parked up loaded in one position for long periods is a another matter.

 

[2657]

Just had new tyres fitted to my van! Old ones hankook and still like new but 10 years old.Even tyre fitter was impressed with them but said sometimes they crack between the treads but no sign of deterioration! Only problem was getting van high enough to get rears off.Even if I could lower spare from its storage underneath I don’t think at 75 I have the strength to drag it out from underneath and change it myself!!

That's what breakdown cover is for

After a lifetime of changing wheels myself, including trucks, this is now reluctantly what is needed, can get down but getting up again is problematical

 

[Vipar]

Tyres have this strange sense of when it is best to blow, or have a puncture. They know when your in a hurry to catch the ferry, or when your on a sharp bend going up a mountain road. And best of all when it’s pouring or rain, in the middle of the night.
Horrible things

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[mitzimad]

dont tell the rac if you think youve hit something in the road as your not covered

 

[Lenny HB]

I doubt a fully loaded parcel van would be at its max limit, and if it was it would be empty after 8 hours, a Motorhome is, or can be at it's max most of the time.

Just look at a lot of service vans on the road loads fully load 24/7 carrying spares and tools. The only time where camping tyres may be better is if you leave ther van standing for months on end.
Not all Motorhome manufacturers fit Camping tyres, N&B fit Conti Vanco 4 season as standard I don't think any of the converters that use the Iveco chassis fit camping tyres.

 

[Dafydd_Cymru]

OK sorry I've been enjoying myself on Skye. The tyres were Avon A11 van tyres. Due to covid the van was standing for 6 months.
Van has 4 ppl clothes food and 3 bikes so not sure about the weight.
I do wonder if the was a puncture as a few mins before the steering felt floaty and I tried to get to a service station so this may of been my fault for not just stopping, hard on a motorway.
I now have two Michelin tyres on the back camper type, I'm told its best to have matching. Tyre pressure was 80 psi before I left. No damage except for £320 and a scrape as I left the tyre place because some builder parked by the gate...thats another story

 

[busby]

Just for curiosity, what would make a commercial tyre unsuitable for a motorhome?

I have always wondered that..They reckon its because Motorhomes are always fully loaded but if vans are used for haulage like mine were to make a profit they needed to be loaded as much as possible..Never had tyre problems,,BUSBY.

 

[Landy Andy]

I think the difference is

Van-often fully loaded and moving all the time (with in reason)
motorhome-always fully loaded, long time stationary.

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