Don't get too excited by these.....they promise a lot & deliver a little !! My Mrs had a set on a '54 Morris Minor (the trims were Atlas brand), the tyre fitters were very sceptical about fitting them behind the tyre/rim bead & kinda said "no liability or come back on us !" For them to sit nice & tight you really do need a high sidewall tyre or they just don't sit right. To try & overcome the "flapping/rippling" problem you can put grease or petroleum jelly behind them to create a seal to the sidewall......but of course the lubricant splats out with the revolution of the wheel & makes a right mess !! The editor of Practical Classics magazine here in the UK was running a set on his Rover P6 & the outer edge of the trim has started to score into the sidewall of his tyres because of friction !! Pretty, but not good !! & they definately won't work on the stock C5 Avons