Some of the things you may need to do before getting your 3.5 tonne motorhome reregistered.

• Suspension - this maybe either adding air suspension or stiffer suspension to compensate for the additional weight. 
• Engine upgraded - with all this extra weight you will need extra power to get it up those hills - this maybe just having it re-mapped by re-programming the vehicle ECU or you may need to dig deeper adding major components.
• Braking - You may want to consider improved braking. This maybe in the form of a higher quality of pads and shoes, but may need a higher performance disc.
• Possible warranty issues - if this is a relatively new vehicle this could have an impact on your warranty, either motorhome or base vehicle.
• Insurance - this could impact on your insurance policy.
• Many of these upgrades come at a cost, so it's important to consider how important this upgrade is.
• Your licence - in the UK to drive a vehicle above 3.5 tonne requires additional driving licence categories often not given to new drivers.

You may want to consult a qualified engineer to discuss these changes.

Buying above 3.5 tones rather than upgrade.

• Suspension - designed for the additional weight. 
• Engine - with all this extra weight it will often have a bigger engine with more BHP.
• Braking – often comes with improved braking or even additional axels.
• Warranty – no issues around the warranty because it has not been modified, either motorhome or base vehicle.
• Insurance – no issues around insurance policy because they know the vehicle.
• Many of these upgrades come at a cost, you may find that the additional cost to buy your bigger vehicle may work out more cost efficient.
• Often these are longer with bigger habitation areas
• Handling – because they designed from ground up, they do not handle unpredictable.  
• Your licence - in the UK to drive a vehicle above 3.5 tonne requires additional driving licence categories often not given to new drivers.

You may want to consider this as an option.

The most obvious advantage of upgrading your motorhome to above 3.5 Tonnes would be its additional ability to take that extra load.

• Used for extra storage.
• Additional water supplies
• Additional gas supplies
• Additional passengers
• Extra towing capacity

Private HGV - (TC10)

A motorhome or campervan with a revenue weight above 3500kg is categorised as a private heavy goods vehicle. However, these private heavy goods vehicles are taxed based on weight, emissions, and the number of axles.

• A motorhome or campervan with a revenue weight between 3500-7500kg is taxed £165 per annum.
• Campers that weigh 7,500-11,999kg have an annual road tax cost of £200.
• Motorhome tax rates increase for vehicles with revenue weight of 12,000kg and above. However, the tax is based on CO2 emissions, and vehicles that weigh 12,000kg to 14,000kg with a Euro VI-compliant engine will have a road tax rate of £189.50 per year.
• Motorhomes with the same weight but Euro V-compliant will be charged £221 per annum.

Prices TBC on latest rates - Updated on April, 2024

The added weight of your motorhome will enhance its capacity to tow a heavier vehicle, adhering to the general rule that the towed vehicle should be approximately 85% of the weight of the towing vehicle.

However, it's essential to consider the structural capacity of the tow bar and mounting for any additional limitations.

Increasing the gross weight of a motorhome can improve stability, especially in windy conditions or when driving on uneven terrain. The additional weight can help to counteract sway and improve overall handling.

However, this will only be the case when all other modifications have been done to meet with the increased weight i.e. suspension, tyres braking weight distribution etc.

In the UK, driving a motorhome over 3500kg requires specific licensing and may entail additional requirements.

Category C1 Driving License:

To drive a motorhome over 3500kg but not exceeding 7500kg (with a trailer of up to 750kg), you generally need a category C1 driving license. This license allows you to drive vehicles weighing between 3500kg and 7500kg.

Driver Training and Testing:

If you don't already hold a category C1 driving license, you'll need to undergo specialized training and pass a test to obtain it. This typically involves completing a theory test and practical examination focusing on driving skills, vehicle handling, and safety procedures specific to larger vehicles.

Motorhomes over 3500kg must be properly registered with the DVLA (Driver and Vehicle Licensing Agency). This ensures that the vehicle meets safety and regulatory standards for its weight class.

Insurance coverage for motorhomes over 3500kg may differ from standard vehicle insurance. Insurers may consider factors such as the vehicle's weight, size, and intended use when determining coverage and premiums.

Also because these modifications are outside of the standard build they may be increased insurance rates added

In the UK, driving a motorhome over 3500kg may entail certain road restrictions due to the vehicle's size and weight.

• Weight Limits: Some roads, bridges, and tunnels have weight restrictions to ensure the safety of infrastructure and other road users. Vehicles exceeding a certain weight threshold may be prohibited from accessing these routes
• Low Bridges and Tunnels: Motorhomes over 3500kg may encounter weight restrictions when passing over bridges. It's essential to check weight limits before attempting to navigate these structures to avoid causing damage.
• Traffic Signs: Pay attention to traffic signs indicating weight limits
• Planning Routes: When planning your journey, consider the additional weight of your motorhome and choose routes that are suitable for larger vehicles. Use GPS navigation systems or maps specifically designed for motorhomes to avoid restricted areas and navigate safely.

When driving a motorhome over 3500kg on EUroads, it's essential to be aware of specific regulations and considerations.

• Speed Limits: The speed limits for motorhomes over 3500kg in the EU are generally lower than those for lighter vehicles. On highways (autoroutes), the speed limit for motorhomes weighing over 3500kg is 110 km/h, whereas it's 130 km/h for vehicles under 3500kg.
• Road Tolls: When driving on EU highways, you'll encounter toll booths. Motorhomes over 3500kg are classified as category 2 vehicles and are subject to higher toll charges than lighter vehicles. Be prepared to pay tolls based on your vehicle's weight and height.
• Environmental Zones: Some cities in EU, such as Paris and Lyon, have low-emission zones (Zones à Circulation Restreinte, ZCR) where access is restricted to vehicles meeting certain emission standards. Heavier motorhomes may be subject to additional restrictions or charges in these zones
• Parking and Overnight Stops: When parking or staying overnight in EU with a motorhome over 3500kg, look for designated motorhome parking areas (aires de services) or campsites that can accommodate larger vehicles. Many campsites offer facilities such as electrical hook-ups and waste disposal suitable for heavy motorhomes.
• Documentation: Ensure you have all necessary documentation for your motorhome, including vehicle registration, insurance papers, and proof of ownership. Carry your driving license and passport with you at all times when driving in the EU.

Selling a motorhome weighing over 3500 kg can pose challenges due to the smaller pool of drivers holding the necessary C1 classifications, especially among younger demographics. This limitation narrows the potential buyer base, potentially complicating future sales and potentially lowering the selling price.

Generally, heavier motorhomes offer more space for living, sleeping, and storage. This extra space can make long trips or full-time living more comfortable.

Heavy motorhomes often come with more luxurious amenities such as larger bathrooms, kitchen appliances, entertainment systems, and more.

With a higher weight rating, you have the capacity to carry more gear, equipment, and supplies without worrying about exceeding weight limits.

The additional weight can provide better stability and smoother rides, especially in windy conditions or when passing large vehicles.

Heavy motorhomes tend to be built on stronger chassis to support the weight, which can translate to increased durability and longevity.

Heavy motorhomes typically come with a higher price tag both upfront and in terms of ongoing maintenance and fuel costs.

In many regions, driving a motorhome over a certain weight requires a special license or additional endorsements, which can be a hassle to obtain.

Due to their weight, heavy motorhomes tend to have poorer fuel efficiency compared to lighter models, resulting in higher fuel costs.

Heavy motorhomes can be more challenging to maneuver and park, especially in tight spaces or congested urban areas.

Some roads, bridges, and tunnels have weight restrictions, which may limit where you can travel with a heavy motorhome.

Maintenance costs can be higher for heavy motorhomes due to the wear and tear associated with their weight, as well as the complexity of systems.

Selling a motorhome weighing over 3500 kg can pose challenges due to the smaller pool of drivers holding the necessary C1 classifications, especially among younger demographics. This limitation narrows the potential buyer base, potentially complicating future sales and potentially lowering the selling price.