Rubbing issues with EV1 R800 wheels

[Millertimr]

Fwiw I have the same setup and had my truck with 21s recalibrated to 20s. I still get rubbing however it's usually when the suspension is moving up/down at extreme angles or in the lowest. I noticed in kneel mode my truck is a lot lower in the front than the back. I suspect it might be something to do with my suspension more so than the tires. I have an appointment st the service center on the 22nd. I'll let you know what comes of it.

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[Spaceball1]

It’s likely the extra tread depth of the falkens.

I don’t think that’s all of it. EVSportline and many others on the forums have had same setup without rubbing, even in lowest setting. Perhaps they just haven’t tested it on as aggressive of bumps as I have in my neighborhood. I guess I’d have to try out stock 20” tires to know for sure.

 

[Herb]

One way to find out if your truck sits lower than others is to compare tire size and truck height to other trucks. If you need a reference, I can take measurements at each corner, say from floor to the bottom of plastic trim around the wheelhouse. This is of course only meaningful in combination with the exact tire diameter. What matters is the dimension to said plastic trim minus half of the tire diameter. This should be the same, regardless of tire/wheel setup. I suggest to take these measurements with in low ride height and with the truck "on". If that checks out, I suspect that the wheel well plastic trim is not installed correctly.

Do you have a lot of stuff (weight) in your truck that makes it squat? I would think that auto levelling takes care of that most of the time, but extra weight will impact suspension response during dynamic conditions.

 

[Spaceball1]

One way to find out if your truck sits lower than others is to compare tire size and truck height to other trucks. If you need a reference, I can take measurements at each corner, say from floor to the bottom of plastic trim around the wheelhouse. This is of course only meaningful in combination with the exact tire diameter. What matters is the dimension to said plastic trim minus half of the tire diameter. This should be the same, regardless of tire/wheel setup. I suggest to take these measurements with in low ride height and with the truck "on". If that checks out, I suspect that the wheel well plastic trim is not installed correctly.

Do you have a lot of stuff (weight) in your truck that makes it squat? I would think that auto levelling takes care of that most of the time, but extra weight will impact suspension response during dynamic conditions.

Yeah typically the best way to measure ride height is from center of hub to fender, as that takes out tire tread variation and air pressure variation. I have done that before but it’s hard to get an exact measurement with the measuring tools I have (a tape measure ?)

I may need to try this with better tools from work and then see if I can check some other Rivians at the SC to compare.

I don’t think I have any issues with the liners, as it’ll rub on both sides depending on which way I’m turned.

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