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Discussion in 'Wheels & Tires' started by goaljnky, Jan 20, 2010.
Found them on EBay, but here is a pic:
16x7.5, +30. Will that work on our cars?
Are you sure you want 16" wheels? If you are, the lip on those is pretty sweet.
Just spitballing. 30 offset could be problematic. Plus tire selection in 16s is not all that.
Well what size tires do you want to run? You could pull them off slightly stretching 205's on them (the stretch would be minimal....7.5 is usually within the normal range for 205's). If you're looking to run 225's or something for autocross, that can be a bit more problematic.
Either 205 or 215 is fine with me, but at least from TR the pickings are slim. I prefer my tires in the 200 wear range.
I run 225-45-16s on my SSRs (16x7.5). Works great. I'd be worried about that offset though without spacers.
What offset are you running on those?
And I just can't get a grip on this offset thing. If they are +30 offset, the wheel is biased to the outside? Would it not push the rim further out if spacers are added?
This should clear things up (lifted from this page on Tire Rack).
Offset is the distance from the wheel centerline to the mounting surface, so a lower offset means the wheel is biased inboard.
But 42 would be more biased inboard then 30. So I would need spacers to clear the inside?
Not quite. Look at the diagram from the perspective of the centerline, as though the centerline is fixed. Increase the offset and the mating surface moves outward. That's the effect of the spacers, they increase the offset by pushing the mating surface further out. If the offset is too low you'll have a clearance problem at the back of the wheel.
Incorrect. Spacers DECREASE the Offset. A 17x7 et42 with 5mm spacers will have a final offset of 17x7 et37.
No. The lower the offset, the greater the clearance on the back of the wheel. If you need more inner clearance to avoid rubbing struts, you install spacers to LOWER the offset.
Lower offset = more poke (biased outward)
Higher offset = more tuck (biased inward)
You SUBTRACT the spacer width from the original offset to find the final offset. Thus, spacers LOWER the final offset and make the wheel move OUTWARD.
What Rally said.
About time you came up with something I can agree with.
:lol: It was bound to happen
Rally is right of course. In fact, I have a set of wheels with 48mm offset and I have to use spacers to keep them from binding on the suspension.
Now I'm sitting here feeling like an idiot trying to figure out how I got that wrong...and think of an excuse... :confused5:
I got one for you. Just use this:
:lol: Nope, too easy. Think I'll go with stroke this time...yeah, had a little stroke...but I'm better now...yeah, that works... :ihih:
Back to the topic, how 'bout that +30 offset? I still think you're likely to have clearance problems...but for different reasons now that I'm visualizing it the right way 'round. Don't have any experience with that width and offset combo though so I'm just guessing.
Well, I am running 17x7.5 with 45 offset right now. So these would come out another 15 mm which is about 6/10 of an inch. I don't think have that kind of clearance. At least not under compression. Oh well. The wife didn't like them anyway.