Reference should always be made to the supplier if there is any doubt. Where a wheel/tyre unit maximum weight capacity is declared, if either of the two parts has a different loading capacity, the declared figure will be the lower of the two. Wheels, like tyres, have a maximum weight capacity determined by the manufacturer. The practice of using car wheels, rather like that of using car brakes, has largely died out. There are many different types of wheels fitted to trailers, many of them specifically for trailer use. It is ESSENTIAL that the torque settings are re-checked after the first 25 miles or 50 km and subsequently before each journey.
The sequences necessary to correctly carry out this work are as follows:. To neglect this is too run the risk of either the nuts/bolts working loose and the wheel coming off (not tight enough), or damage to and possible shearing of the nut/bolt (over tightened). When refitting a trailers' road wheels it is ESSENTIAL that the wheel nuts/bolts are tightened to the recommended torque figure and in the correct sequence. Trailer and Caravan Wheel Bolt Tightening Nominal section width - on radial tyres this is expressed in millimetres, on cross ply tyres, inches are used. Retreads - must also show either 'RETREAD' or 'REMOULD' on the sidewall, together with 'BSAU 144' in place of ECE Type Approval Mark.Īspect ratio - ratio between the height of the sidewall and the width of the tread, expressed as a percentage. The illustration below provides an explanation of the markings currently found on a tyre sidewall.
See links above for detailed tables on Tyre Load Index, Tyre Speed Symbols and Tyre Load & Pressure Ratings. (Make sure that the tyres you fit to your trailer are of the correct rating.) Additional Tyre information: Tyres must be free from deep cuts and bulges (which indicate they are breaking up) and it is illegal to use cross-ply and radial tyres on the same axle. Trailer and Caravan Tyre Markings & Condition:Ĭar, caravan and trailer tyres must have at least 1.6mm of tread over the central 75% of their width for their entire circumference, although a tyre with under 3mm offers little grip in the wet. I didn't feel it Date & time: 15:03:55 UTC - Local time at epicenter: Tuesday, 8:03 am (GMT -7) Magnitude: 2.4 Depth: 20.5 kmĮpicenter latitude / longitude: 40.92017°N / 123.Trailer and Caravan Tyre Load & Pressure RatingsĪ table covering popular trailer sizes is given below.
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