From the author's README on Thunderstore

Back in my day, 46mm was plenty.

A custom 46mm wheel mesh for that tiny-wheel, old-school street setup. Works with standard wheel graphics.

Compatibility / Load Order

Load this mod before other wheel mesh mods to see the 46mm wheels.

Model replacements affect every wheel that uses the replaced asset. When multiple mods replace the same asset, whichever loads first takes priority. If another wheel mesh mod loads first, its shape will appear instead.

Install 46mm Wheels

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for 46mm Wheels and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.