Quote: Originally posted by Surfer01 on 22/2/2010
Your post reads as if you are getting mixed up with the tyre loading and the actual rim. There are plenty of tyres out there with the correct loading for a caravan as they are made for commercial vehicles and not specifically for caravans.
not really,as a qualified motor engineer who ran a garage many moons ago and worked for a large company of motor part manufactures for 35 years.try it yourself,find a tyre with the correct loading and size for this tyre.never said there were tyres made just for caravans only,my last van had van tyres fitted.the 70 wall height must be same as i have a motor mover fitted and do not want to move it.
195/70/14/96N at a cost of about £60 to £80.
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Quote: Originally posted by contivanman on 22/2/2010
Yes mate somthing along these lines but i was thinking of changing my van the 1 i was looking at had steel wheels just thought matching the car wheels would look better obviously the tyres and wheel would have to be of the correct rating i was just wondering if a caravan alloy was of a special design compared to normal car wheels?
The wheel would need to fit the caravan, not just the pcd but also the offset & the hub centre would need to fit the wheel, this is important as modern wheels are 'hub centric' & all the weight is carried on the hub. After market alloys come with alignment rings to allow you to do this, also aftermkt alloys have usually have load ratings & those designed for the weight of a car on 4 may not be sufficent for the weight of a large caravan on 2.
If you want to use alloys supplied as oe on your car so you have a matching outfit this might be more difficult. You say pcd is ok but so would offset & hub centre size have to be ok as well. The wheel centre could be machined out to fit if too small but would be unsafe if hubcentre was larger as all the weight would be on the studs & could cause a broken stud.
Aftermkt alloys are designed to fit various applications & therefore have adjustable centres & load rating info is available. The alloys on your car as supplied new are specific to that car. Load rating info may not be available & fitting to caravan could only be done by trial & error. The ride height of the caravan would also need to be maintained or it might tow nose up/down & size of tyres required to achieve this may not be available in the load rating required for caravan.
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The wheel would need to fit the caravan, not just the pcd but also the offset & the hub centre would need to fit the wheel, this is important as modern wheels are 'hub centric' & all the weight is carried on the hub. After market alloys come with alignment rings to allow you to do this, also aftermkt alloys have usually have load ratings & those designed for the weight of a car on 4 may not be sufficent for the weight of a large caravan on 2.
If you want to use alloys supplied as oe on your car so you have a matching outfit this might be more difficult. You say pcd is ok but so would offset & hub centre size have to be ok as well. The wheel centre could be machined out to fit if too small but would be unsafe if hubcentre was larger as all the weight would be on the studs & could cause a broken stud.
Aftermkt alloys are designed to fit various applications & therefore have adjustable centres & load rating info is available. The alloys on your car as supplied new are specific to that car. Load rating info may not be available & fitting to caravan could only be done by trial & error. The ride height of the caravan would also need to be maintained or it might tow nose up/down & size of tyres required to achieve this may not be available in the load rating required for caravan.
I'm not sure you have this right for the simple reason the the full 2.5 tonnes of one of my 4x4s is taken on the studs - in fact there is no hub available for the wheel to sit on. I believe you will find that the tensile strength of the studs have been calculated to take the full weight of the vehicle they are on
Quote: Originally posted by Rune Caster on 22/2/2010
I'm not sure you have this right for the simple reason the the full 2.5 tonnes of one of my 4x4s is taken on the studs - in fact there is no hub available for the wheel to sit on. I believe you will find that the tensile strength of the studs have been calculated to take the full weight of the vehicle they are on
As your vehicle has lug centric wheels the the studs will indeed have the tensile strength to take the weight as they have been designed to do that.
You are failing to understand the difference between hub centric & lug centric wheels. This is relavent to the op in as much that if you want to fit non standard wheels to anything you need to understand exactly what you are doing or you can come badly unstuck.
Car wheels are for cars and caravan wheels are for caravans.
They have different load bearing ratings ie on a single axle caravan, the two wheels have to take all the weight of the caravan whereas the weight of a car is distributed over four wheels.
regarding putting car wheels on a caravan, I think the bearing would give up the ghost before the studs go. its like putting wheel spacers on your car hub to bring the wheel farther out from the wheel arch. putting more stress on the bearings. But am sure some caravan wheels are different.
wot tentz is try to explain, some wheels have the flange that the stud holes are, are dead centre of the wheel. some wheels are offset. to try and explian it better. look at the top of the wheel, is the flange centre? some arent This is the difference between hub centric & lug centric wheels
Post last edited on 23/02/2010 18:21:33
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Quote: Originally posted by Bill Terry on 23/2/2010
Quote: Originally posted by Vic Wildish on 23/2/2010
Quote: Originally posted by Surfer01 on 22/2/2010
Quote: Originally posted by phil76 on 22/2/2010
just out of interest do caravans supplied with alloys as standard come with an alloy or steel spare
phil
Steel but they supply you with set of nuts as you cannot use the same nuts to bolt on the steel wheel that you use on the alloy wheels.
That's news to me. Mine came with a steel spare but I didn't get a set of different wheel nuts.
Enlighten me.....do!
Vic
alloy nuts are different to steel wheel nuts. if your van has studs then you you should have a set of studs for wot ever your spare is
Now I'm really confused Bill. Nuts, studs....? My understanding is that studs were what came with much older cars and caravans and were set into the hubs. You then fitted the wheel over these and secured it with nuts. What we have now surely is wheel bolts which screw through the wheel into the brake drum. This is certainly how they're referred to in my Explorer Group handbook.
Also the handbook only states the different torque wrench settings for steel bolts ie 65lb/ft for steel wheels and 85lb/ft for alloys. No mention of different bolts.
Sorry but can you be more specific in your response?
My Avondale Handbook states under 'Spare Wheel' -
"The recommended torque for steel wheels is 65lbs/ft, (sic!) the torque for alloy wheels is 85lbs/ft.(sic!)
NB. Special bolts are supplied with alloy wheels and these can be used where a steel wheel is used as a temporary spare."