i3Bev
Posts: 20
Joined: Wed Dec 12, 2018 1:37 pm
Location: Colorado

Winter set on and questions

Wed Dec 19, 2018 9:23 am

Hello so I finally mounted my winter set with Bizzaks. For those of you who have these set or similar with 19" wheels, do you guys have lowering springs and/or spacers? What brand would you recommend? Gap becomes huge when I switched from 20 inch wheels.

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2015 i3 BEV
- Giga World
- Parking Assist
- Tech+Driving Assist
- Style 430 20” OE Staggered Wheels
- Rial X10-I 19” Wheels (Winter Setup)

jadnashuanh
Posts: 4397
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Winter set on and questions

Wed Dec 19, 2018 1:03 pm

That's an optical illusion...the OD, and rolling circumference on the 19" wheel/tire and the 20" are identical. If you drive in accumulating snow, maintaining the gap is a very good idea as snow can get packed into the wheel well in some situations. What's different is the amount of wheel and tire sidewall that you can see, but the things are the same diameter.

If they weren't the same diameter, your odometer and speedometer would be way off.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

CharonPDX
Posts: 90
Joined: Sat Jul 21, 2018 8:54 pm

Re: Winter set on and questions

Wed Dec 19, 2018 5:43 pm

What jadnashuanh said - for winter driving, you want that gap.

TheMK
Posts: 136
Joined: Tue Sep 18, 2018 8:57 pm

Re: Winter set on and questions

Wed Dec 19, 2018 8:45 pm

My friend and I compared the RIAL X10-i (What you have, and what's also on my car for the winter tires), with the stock aerodynamic 19-inch wheels that come as part of the mega/dekka world (or the OEM winter tire package), for geometry, size, etc. We found that they were basically identical. I checked my speedometer against one of those speed-check signs and it's the same before and after the 20inch to 19inch wheel swap. You're good to go!

i3Bev
Posts: 20
Joined: Wed Dec 12, 2018 1:37 pm
Location: Colorado

Re: Winter set on and questions

Thu Dec 20, 2018 8:23 am

Yeah I measured and it's the same sorry about the confusion. Yeah it does seem like optical illusion :D
2015 i3 BEV
- Giga World
- Parking Assist
- Tech+Driving Assist
- Style 430 20” OE Staggered Wheels
- Rial X10-I 19” Wheels (Winter Setup)

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