A: 15” Steel
Sizes available are 15” x 7”, 15” x 8” and 15” x 10” (although hard to get). Depending on what other modifications are done the offset on these rims is most likely required to be altered. Eg: A 31” x 10.5” tyre will fit on a 15”x 7”/8” but will not fit under a standard arch as the offset is too far inward. Fitting 33”/ 35” x 12.5” tyre on the same rim with flares does fit but the rim should be modified outward to achieve maximum steering lock, articulation and looks. The other drawback with 15” rims is to use a tall tyre there is not many thin versions available except for specialist tyres like Simex.
B: 16” Steel
Readily available in 16”X 7”. We choose to use factory rims like Discovery I steel rims and modify these to achieve the optimum offset for the chosen tyre. The advantage is a 33” tall tyre is available in 10” or 11.5” wide, a lot thinner than the 15” equivalent. The draw back is at the moment there are no 35” size tyre available except for the specialist range like Simex.
Now available off the shelf are steel rims for RRC, Defender and D1 - 16" x 7" +20mm, 16" x 8" +6mm and 16" x 8" -25mm. And for the Discovery Series 2 16" x 8" +30mm and 16" x 8" +6mm
C: Alloy or Steel
Alloy rims are lighter and look more attractive but personally I do not think them to be practical. They are strong but brittle, they cannot be repaired easily and the offsets cannot be altered.
Steel rims are heavier and sometimes can look a bit plain. They are very strong, repairable in the bush if bent and can achieve most required offsets.
Most clients own an alloy set for road tyres and a steel set for off-road work.