Probably legal ...but I hope it's not a 4X4 since minor differences in tread and hence wheel diameter puts excessive strain on the differentials and is a lot more expensive to fix than a set of new rubber
Sorry I meant the pattern of the tyre tread!
Do all the tyres on the car have to have the same tread pattern? or is it ok to have non mantching tread patterns
At First Stop in Lagoa a few years ago, I was told that the pattern on tyres on the same axle had to be identical. The best place to verify this would be at an IPO inspection centre, as they are up to date on the legal requirements.