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threesheds wrote: ↑Thu Nov 17, 2022 12:12 pm Coming late to this party but is offset important for racing class rules, stresses on other car parts or steering geometry or all three?

As offset changes the track width, it is definitely important for class racing. For most classes, there will be maximum widths that must be maintained.

Wider offsets will increase the stress on pretty much everything from the caster blocks out, however minimal it may be.

Increasing offsets will change the scrub radius, effecting steering geometry. Positive scrub widths also require increased steering input.

threesheds wrote: ↑Thu Nov 17, 2022 12:12 pm I was wondering if tyre alignment with steering kingpin was important.

While the camber angle should remain consistent, you may not need as much with wider offsets.

That helps as I'm fiddling with some axle and tyre mods, thanks