Has anybody any experience of these things?
www.alloygator.co.ukHad a quick browse about, and they seem to be ambivalently received. Some like them & say they work. Others mutter about having to deflate the tyre & hammer them in, so the tyre bead sits on the gator, rather than the wheel rim. This leads to forum muttering about high speed stability.
Dunno really. Over to you, wise forum user...