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      09-30-2018, 06:55 PM   #7
Machinebuilder
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Drives: 640 IX GT
Join Date: Feb 2014
Location: Northeast USA

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Benefits of Minus 1 Wheel and Tire 18" vs 19" or 20"

Benefits:
Much Smoother ride - 50 series tires vs 45 makes a difference...even with runflats
less chance of blowouts and bent or cracked rims from bad roads and potholes
Lighter wheel gives faster acceleration
less chance of curb damage on wheels...note how to tire sticks out a bit more than on a 19" 20" etc Keep in mind the OEM stock G11 740 rims I used are 18" x 8" vs 19" x 8.5" That 1/2" makes a big difference on how close to the curb your rim is.
less expensive and greater selection of tires

Negatives:

doesn't look as good or modern... totally get it

Their high speed control and handling is not as good as a 19" or 20" rim they say. Honestly This is not an M3 or sports car and I do not drive very fast so I don't feel the difference much.

In New England with old rough roads and broken pavement it makes alot of sense. If your roads are smooth It is probably does not much difference. I have been doing this for years and I haven't cracked a rim or bubbled a tire since.
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