I've just bought some second hand alloys off of ebay for the car, picked them up on Saturday in Bristol. A steal at £10 for 4 with 2 good tyres. They have 2 mint condition with 6mm tread enduro 606 and 2 flat tyres with 2-3mm tread. Already on the car I have 2 Mitchlin tyres with good tread. I'd like to take the michelins and put them on the alloys, but the sizes are slightly different. The enduros are 185 60 r14 the michelins are 185 65 r14. Is it legal to have the enduros on the front and the michelins on the rear?