Red Wheel liners

Treblig said
Be very careful with the heat gun, plastic will get soft and warp.

fair point: I looked up PE (polyethylene) melting points:
LDPE: 110 °C (230 °F)

HDPE: 130 °C (266 °F) **

PP (Polypropylene)

130°C (266°F) melt point
more brittle than PE.

These low melt points are far higher than the heat required to soften tar but should be addressed. Test on a small area before widescale use.