Bike Wheel Riser V2

I made some modifications to @Sportingperformance's bike tire riser, for use with indoor bike trainer systems like Zwift.

I added some flanges to increase the floor surface area, made some minor cleanup modifications, and made some changes including adding relief cuts to the base to reduce the likelihood of the part warping during printing (although it did warp a bit during my first print). I'm printing this part in PETG, with a sparse gyroid infill. I printed on the Coolplate Supertack, but will have to go back to a PEI plate for better adhesion.

Also included is an optional TPU sleeve which press-fits around the perimeter of the Riser for improved friction.