Last time I measured Pro-Line (Traxxas offsets) 4wd and 2wd front wheels it was 2.3mm difference. The front wheels give a RC platform extra width. When I put SC wheels (Trx. 4x4 offset) on my ST (w/Associated wheels), I gave up 4mm of width on each side.
Edit: I should have explained it better. When using ST tires mounted up on Associated stadium truck wheels, and then switch to SC tires mounted on SC wheels that are the Traxxas 4wd SC offset, you will lose about 4mm of width on each side (8mm total). Hope that helps.
Last edited by rustyus; 06-01-2019 at 05:00 PM.