2026-09-01 · Mr Luthando Mabuyakhulu
Spare wheel choice that matches
Do not mix diameters when the haul is far.
Tyre and rim match-up
Do not mix diameters when the haul is far. Mr Luthando Mabuyakhulu prepared this note at our Germiston office, based in part on discussions during showroom hours at second-tier malls. It is meant for crews who understand that a bakkie hitch behaves differently from what a photo suggests.
A spare wheel must match the running set on diameter, PCD, load rating and offset, not only the tread width. On a tandem or tri-axle trailer, one odd wheel can make a loaded trailer sit skew, work one brake harder, and heat a hub on the N3 or a rough yard road near Germiston. Before a long haul, compare the sidewall size, stud pattern and rim width against the wheel already fitted to the axle.
Pair this note with a trailer under Trailers and a haul under Hauls. The catalogue is a road equipment supplier operated by Astros Marketing (Pty) Ltd. Once your plate numbers and hitch height are ready, send them through our contact form.
Yard checks before the pull-out
- Sidewall size matches every road wheel
- Stud pattern fits hub without forcing
- Spare pressure suits the loaded trailer
- Wheel nuts seat correctly on the rim
- Carrier mount holds firm on corrugations
Highveld heat and long tar stretches punish an underinflated spare faster than most crews expect. Near the coast, check the spare carrier, studs and valve stem for rust bloom before that wheel is needed on the shoulder. On quarry entries and yard gravel, a spare with lighter construction than the road set can chip or bruise early.
When one spare can serve
One spare can cover more than one trailer only when wheel size, hub pattern, centre bore and load index line up across those units. A bakkie spare that happens to bolt on is not enough for a plant trailer or a fuller utility load leaving a second-tier mall stock point. Mark the spare by size and trailer use so the right wheel leaves the yard.
Keep the spare where crews can read the tyre size without unpacking the whole nose box. If a wheel has been swapped in from another unit, note that change before the trailer heads back onto public roads.
Read related fitment notes under Axles, then compare carrying options that suit your trailer deck. For wheel mounts and retaining parts, start in Kits. For examples of carrier positions on working trailers, open Gallery.
Photos that help wheel identification
Attach the coupling photo and the GVM plate shot. Name the route. Name the tow vehicle. That is how our contact form answers without a long chain. The office sits in Germiston with Astros Marketing (Pty) Ltd at 2 Makro Place, Sunnyrock 1401.
When asking about a replacement spare, send a clear photo of the tyre sidewall, the rim face and the hub or stud pattern. Include the trailer type and where it runs, whether that is urban deliveries, site access roads or longer South African highway legs.
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