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Originally Posted by wartex11
im sorry this is going to be a really noob question
ok ill start with my car model, 2007 impreza 2.0i
im in the market for 18" rims, my factory ones are 15", i heard going to 17" is alright without speedo adjustment but 18" u need to get it adjusted? is this right?
also.. what are my limitations on the rims, offsets etc..
ive read 5 x 100 and 5x 114.? thats 5 rims and what is the 100?
also ive read 100 x 8.5, is 8.5 the width of the rim?
and offsets.. + offset is so the rim sticks out from the tyre and - offset is kind of like a dish? what is my max (or min? offset so i dont need spacers ? (what else is there?)) or guard rolling or something
thanks heaps
edit: also ive seen some 240, 235 etc? 275?!
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8.5 will be how wide ur rim is. 240/235/275 will be the width of your tyre.
Edit: For a 8.5 rim, you wouldn't generally go more than a 245, 235 is sufficient.
Offsets vary for different rims, so each case will require a different offset. Speak to your tyre store, they can get this info from the rim manufacturer. For example in one design of Rays a +45 would have been sufficient on my 06 sti, in another design +50 was the minimum.
Pls correct me if i'm wrong.