Quizzes & Puzzles3 mins ago
Puncture In Motorhome Tyre
Could someone please advise the rights and wrongs of repairing a tyre from a motorhome. A screw hole, less than 6mm dia, is right in the centre of the tyre so the position doesn't seem a problem. The tyre is a Contiental VancoCamper 225/75 R16 CP, normal use maximum pressure 69psi, but for motorhome application the maximum pressure goes up to 5.5Bar, recommended pressure on my vehicle is 79.5psi. Gross weight of the motorhome is just under 3.5 tons, would a repaired tyre be safe and satisfactory for my motorhome?
Answers
OK, Less worriednow. Assuming it's this: https:// www. oponeo. co. uk/ tyre- details/ continental- vancocamper- 225- 75- r16- 116- r- cp Suggests a load capacity of 1250 kg per tire. 2.5 tonnes on each axle. I'd suggest maybe getting aset of aftermarket pressure valve caps like these: http:// www. fit2gotpms. com/ michelin/ or these...
20:38 Sat 18th Aug 2018
This is right on the limit.
No real worries about then repair, so long as it is done properly; but 79.5 psi = 5.48 bar.
Few automotive pressure gauges are that accurate. You runthe risk of under-inflation (will generate too much heat), or over-inflation (may over-stress the reinforcement in the tyre, especially at high speeds)
Your main enemy here is heat. If you are running at 60mph/100kph and not on roads that are excessively hot (Italian Autostrada del sol), then it *should* be OK.
But wow, that's close to the limit.
Your margin of safety will depend a bit on how many tyres are supporting that weight; how much load you're carrying, what speed and the temperature of the air and the asphalt/concrete.
Personally, I'd be looking for maybe bigger tyres. I'd definitely want them to have a high load rating (the number (such as 103) after the designation 227/75R16 S (or whatever speed rating) - and the XL rating.
Are these the recommended fitment from the manufacturer?
No real worries about then repair, so long as it is done properly; but 79.5 psi = 5.48 bar.
Few automotive pressure gauges are that accurate. You runthe risk of under-inflation (will generate too much heat), or over-inflation (may over-stress the reinforcement in the tyre, especially at high speeds)
Your main enemy here is heat. If you are running at 60mph/100kph and not on roads that are excessively hot (Italian Autostrada del sol), then it *should* be OK.
But wow, that's close to the limit.
Your margin of safety will depend a bit on how many tyres are supporting that weight; how much load you're carrying, what speed and the temperature of the air and the asphalt/concrete.
Personally, I'd be looking for maybe bigger tyres. I'd definitely want them to have a high load rating (the number (such as 103) after the designation 227/75R16 S (or whatever speed rating) - and the XL rating.
Are these the recommended fitment from the manufacturer?
Hi IJKLM, The tyre is one of the original ones fitted to the vehicle when new, moulded onto the tyre is small picture of a motorhome along with the inscription "Due to the special service conditions of motor caravans it is permitted to increase the inflation pressure PERMITTED MAXIMUM INFLATION PRESSURE 15.50 BAR"
As far as I'm aware (I've had three motorhomes) these are the tyres that are fitted as standard to most, if not all, new motorhomes.
The number after 225/75 R16 CP is 116R, this is followed by 69PSI
Thanks for your very helpful reply.
As far as I'm aware (I've had three motorhomes) these are the tyres that are fitted as standard to most, if not all, new motorhomes.
The number after 225/75 R16 CP is 116R, this is followed by 69PSI
Thanks for your very helpful reply.
OK, Less worriednow.
Assuming it's this:
https:/ /www.op oneo.co .uk/tyr e-detai ls/cont inental -vancoc amper-2 25-75-r 16-116- r-cp
Suggests a load capacity of 1250 kg per tire.
2.5 tonnes on each axle.
I'd suggest maybe getting aset of aftermarket pressure valve caps like these:
http:// www.fit 2gotpms .com/mi chelin/
or these
https:/ /www.no nda.co/ product s/zus-s mart-ti re-safe ty-moni tor
to be sure the pressure is accurately maintained. Ad maybe a digital tyre pump such as this:
https:/ /www.ma nomano. co.uk/c ompress or-1060 ?model_ id=6764 289
to keep the things correctly inflated. Beware especially of long runs, heavily laden at high temperatures, or in full sunlight.
Good luck :)
Assuming it's this:
https:/
Suggests a load capacity of 1250 kg per tire.
2.5 tonnes on each axle.
I'd suggest maybe getting aset of aftermarket pressure valve caps like these:
http://
or these
https:/
to be sure the pressure is accurately maintained. Ad maybe a digital tyre pump such as this:
https:/
to keep the things correctly inflated. Beware especially of long runs, heavily laden at high temperatures, or in full sunlight.
Good luck :)
Just another thought - when you do come to replace tyres make sure that you buy reinforced ones. I was told by a friend that one of the most common causes of caravan/motorhome problems is tyres being replaced by non-reinforced ones, resulting in a blow-out.
To put your mind at ease, if you take your puncture to a reputable tyre dealer they should refuse to repair it if they think it won't be safe.
To put your mind at ease, if you take your puncture to a reputable tyre dealer they should refuse to repair it if they think it won't be safe.
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