Mark Sallis
Van, 4x4 & Commercial
Mark covers vans, SUVs, pickups and commercial tyre questions. His area emphasises load capacity, approved construction and the difference between a mostly road-going vehicle and one used for demanding terrain or working loads.
Areas of expertise
Guides credited to Mark
- 4x4 & SUV Tyre Sizes Explained (Metric & LT)Sizes & Markings
- All-Terrain vs Mud-Terrain Tyres (A/T, M/T, H/T)Sizes & Markings
- Flotation Tyre Sizes Explained (31x10.50 R15)Sizes & Markings
- Van & Commercial Tyre Markings Explained (C, CP)Sizes & Markings
- XL, Extra Load & Reinforced Tyres ExplainedSizes & Markings
- How to Reset the TPMS LightMaintenance & Care
- How to Use a Tread Depth GaugeMaintenance & Care
- Toe, Camber and Caster ExplainedMaintenance & Care
- Tyre Dressing: Good or Bad?Maintenance & Care
- Tyre Pressure for a Full Load or TowingMaintenance & Care
- Tyre Repair Kits and Sealant: How They WorkMaintenance & Care
- Wheel Balancing ExplainedMaintenance & Care
- Hidden Costs: Valves, Balancing and DisposalChoosing & Buying
- Do You Have to Replace All Four Tyres at Once?Choosing & Buying
- Tyre Disposal Fees ExplainedChoosing & Buying
- What to Check Before Buying Tyres OnlineChoosing & Buying
- Caravan, Trailer and Motorhome TyresTypes & Technology
How Mark works at Tyres HQ
Commercial and specialist guidance needs the complete service description and vehicle requirements. A similar tyre size does not establish an appropriate substitution, and payload or conversion details can change the checks required.
Our editorial standards distinguish general guidance from an inspection or physical tyre test. A useful claim needs the right source and context, and a revision should also update the summary and FAQs where the same point appears.
You can read how this works in our editorial guidelines and in how we review tyres. Spotted something that looks wrong? Our corrections policy explains how to tell us.