Motorhome tyres: C or CP, and why the actual load matters
Bikes on the back, water on board, luggage for two weeks: a travel-ready motorhome is different from the empty vehicle in a specification sheet. The required tyre version and loading therefore matter alongside size and price.
CP is not a freely interchangeable upgrade
C identifies tyres for corresponding commercial-vehicle applications. CP describes a design aimed at motorhomes. Michelin distinguishes vehicle types and their demands; this does not mean every campervan automatically needs CP or that C and CP are freely interchangeable. Michelin: motorhome tyres.
Take size, load and speed ratings and required markings from the documents for your particular vehicle. Account for conversions or an approved increase in permitted mass. The base vehicle’s specification may not fully describe the completed motorhome.
Total weight is not the whole picture
Permitted total mass does not show the actual distribution. A rear carrier, full tank and equipment can load the axles differently. Actual axle loads and their permitted limits are therefore important too.
Weighing in a realistic travel configuration gives a better basis than estimating from a packing list. It does not replace approval, but shows the loads you actually carry. A higher tyre load rating does not itself increase the vehicle’s permitted payload.
Why we do not prescribe 5.5 bar universally
Manufacturers specify high pressures and valve requirements for certain CP applications. Those instructions have a particular scope. They should not become a universal value for both axles of every camper.
Have the correct specification established for vehicle, tyre, wheel and loading. Valves and rims must also suit the application. The maximum on the tyre sidewall cannot replace this check. Arrange the pressure check before a journey, not only at a service area after the tyres have warmed up.
Prepare the replacement purchase
Record both axle specifications, vehicle and conversion details, and relevant modifications. Ask the fitting workshop about the work needed for your wheels. For year-round travel, include seasonal requirements and the current rules of your destinations.
Our rating guide explains the codes. Use Contact to enquire about a specific version. The tyre needs to match the loaded travel vehicle, not just a number on an old invoice.
Illustrative photo: Joris Beugels / Unsplash.
Read more
Puncture kit or temporary spare: prepare before the next journey
Do you know what is under the boot floor? Many drivers only investigate after a puncture. You can check the essentials calmly beforehand: what is there,...
Tyres delivered: what to check before fitting
The delivery has arrived and the appointment is booked. A few minutes checking it are well spent. Identifying a difference early makes it easier to establish...
Previous tyre model or successor: when is the new one worth it?
The successor has arrived and the previous model is cheaper. Do you have to buy the new number on the sidewall? Not automatically. Correct specification, reliable...