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So I have a 2018 Infiniti Q50 Luxe 3.0 AWD. I honestly do not know my offset but my tires are 225/50/18 and my wheels are 18x7.5. The wheel spec I’m not too sure on it. Tried looking everywhere for the actual Fitment spec. I also do not know my wheel offset :/ I am currently trying to but some BBKs on but they touch the wheel. So I need a positive offset. Maybe 40+? So main question is, which offset do I need to clear my BBKs. My rear tires only has 15% of tread left. So I’m getting aftermarket wheels and was maybe going with 19x10 40+ and my tires will be 275/40 all around... I’d appreciate you help all :)
 

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2018 Q50 Red Sport 400 AWD
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So I have a 2018 Infiniti Q50 Luxe 3.0 AWD. I honestly do not know my offset but my tires are 225/50/18 and my wheels are 18x7.5. The wheel spec I’m not too sure on it. Tried looking everywhere for the actual Fitment spec. I also do not know my wheel offset :/ I am currently trying to but some BBKs on but they touch the wheel. So I need a positive offset. Maybe 40+? So main question is, which offset do I need to clear my BBKs. My rear tires only has 15% of tread left. So I’m getting aftermarket wheels and was maybe going with 19x10 40+ and my tires will be 275/40 all around... I’d appreciate you help all :)
The offset is on the back side of the OEM wheel, cast into one of the spokes. Tire Rack will be a big help.

92210
 
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You can plug in "red sport" instead of luxe at tirerack. Then, they will just show you wheels that will clear our akebono brakes.
 

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Newport, Oregon
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According to your Owner's Manual, your stock 18 x 7.5J wheels have an offset of 45 mm.
 
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2018 Q50 Red Sport 400 AWD
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According to your Owner's Manual, your stock 18 x 7.5J wheels have an offset of 45 mm.
Wheel offset is listed in the owner's manual?????
 

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Page 10-12 in the Technical and Consumer Information section.
 
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