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thanks for that mate..very smart man, you learn something everyday on these forums!:thumbsup:As Wavez suggests, 235/45 is the widest tyre you should consider on 7 inch rims without having to involve additional cost modifying the suspension, body or both. The limiting factor is the amount of clearance available at the top inside edge of the front tyre, where it runs very close to the suspension strut.
The "235" part of the number refers to the width of the tyre in millimetres. The "45" part refers to the tyre's profile, which is the ratio of depth to width. The depth is the distance from the rin to the outside circumference of the tyre, measured as a proportion of the tyre's width. In this example, the tyre is 235 millimetres wide and the profile (also known as aspect ratio) is 45% of 235 millimetres.