Hey Samy I'm now running 285/35/18 Hankook R-S3s on 18x10 inch wheels front and rear on my 1967 Valiant. I have the exact same front suspension as you, my 18x10 front wheels work with both a +24 and a +30 offset. I've obviously done some fender massaging. In the rear my 8.8 is a little wider than your rear, 59.5 inches, but the perches remain in the stock location. Again with fender massaging the 285 Hankooks on 18x10 with either a +24 or +30 offset work.
