View Single Post
      09-29-2007, 03:56 PM   #6
Brigadier General
scottp999's Avatar

Drives: 335i - E92 - 6MT & 4runner SR5
Join Date: Mar 2007
Location: MD

iTrader: (2)

Garage List
2007 BMW 335  [4.50]
Originally Posted by mmm def View Post
'What if you run a 17" and an 18" on the drive wheels? Can that mess up the dif/tranny??
If you match the total circumference (wheel+tire) to 2% or under, you are fine for a spare tire that is temporary.

In this case a 17 inch wheel with a height of 45 is very close to equal an 18 with a height of 40. See the circumference calc I posted a link to.

If I had a flat on mine I would be running a 19 for 3 and 17 for one wheel, but because the circumference is close and the use is temporary it works for a spare tire.
Rob Beck Turbos, PROcede Rev. 3, Procede Fueling Flash (via OpenFlash Tablet), PPS Methanol System (Devil's Own 12 GPH Nozzle/Aquamist Flow Sensor/Labonte VC25), DCI, Quaife LSD, BMW Performance Suspension, Autobahn Exotics Exhaust, Helix FMIC, AR Design Downpipes, BSH Catch Can, RB PCV Valve, Forge Diverter Valves, P3cars Vent Boost Gauge, Alufelgen CSL Reps, Lux 5.1 H8 Angel Eyes, HPB HID Fogs, LTBMW M3 Side Skirts, BMW M3 Rear Spoiler, BMW Front Aero Lip, BMW Pedal Kit, BMW M Shift Knob, Autotecknic Matte Black Grilles.