Wheel Opinion: 16x7.5 Miro STP1

Discussion in 'Wheels & Tires' started by goaljnky, Jan 20, 2010.

  1. goaljnky

    goaljnky New Member

    Apr 7, 2009
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    Found them on EBay, but here is a pic:

    [​IMG]

    16x7.5, +30. Will that work on our cars?
     
  2. BThayer23

    BThayer23 Well-Known Member

    Jun 12, 2009
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    Are you sure you want 16" wheels? If you are, the lip on those is pretty sweet.
     
  3. goaljnky

    goaljnky New Member

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    Just spitballing. 30 offset could be problematic. Plus tire selection in 16s is not all that.
     
  4. Rally

    Rally New Member
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    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.
     
  5. goaljnky

    goaljnky New Member

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    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.
     
  6. Steve

    Steve Administrator
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    Apr 23, 2009
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    I run 225-45-16s on my SSRs (16x7.5). Works great. I'd be worried about that offset though without spacers.
     
  7. goaljnky

    goaljnky New Member

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    What offset are you running on those?
     
  8. goaljnky

    goaljnky New Member

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    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?
     
  9. Steve

    Steve Administrator
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    +42mm
     
  10. Steve

    Steve Administrator
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    This should clear things up (lifted from this page on Tire Rack).

    [​IMG]

    Offset is the distance from the wheel centerline to the mounting surface, so a lower offset means the wheel is biased inboard.
     
  11. goaljnky

    goaljnky New Member

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    But 42 would be more biased inboard then 30. So I would need spacers to clear the inside?
     
  12. Steve

    Steve Administrator
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    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.
     
  13. Rally

    Rally New Member
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    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.
     
  14. goaljnky

    goaljnky New Member

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    What Rally said.

    About time you came up with something I can agree with.
     
  15. Rally

    Rally New Member
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    :lol: It was bound to happen
     
  16. Steve

    Steve Administrator
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    Apr 23, 2009
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    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:
     
  17. Steve

    Steve Administrator
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    :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:
     
  18. Steve

    Steve Administrator
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    Apr 23, 2009
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    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.
     
  19. goaljnky

    goaljnky New Member

    Apr 7, 2009
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    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.
     

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