OK OK I should've bought some last week, I know 
Our driveway/access road is private and nearly a mile long so need some chains to help get out to the main road. Had some last winter but they're too small for current vehicles which have two tyre sizes:
215/65/15 and 205/65/15
There's only a 1.97% or 13mm difference in diameter but no chains listed cover both sizes but ones for the smaller size seem to come in a bit cheaper.
I guess chains for the 215/65/15s will work on the smaller tyres but not vice versa?
