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BMW i3 I01 (2014 - Current)
The BMW i3 and BMW i8 are the first two cars launch under BMW's new sub brand BMW i. The i3 is an all carbon fiber, all electric vehicle meant for urban mobility.

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  #1  
Old 05-25-2017, 11:39 AM
slipnslider slipnslider is offline
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Location: Los Angeles
 
Join Date: Mar 2017
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Mein Auto: Infinity G35
How much range would you give up in order to have wider tires on the i3?

Title says it all.

I think it'd be worth 5 miles per charge on the old battery, and maybe 10 miles on the new higher range batteries in order to have wider tires that improved high speed handling and didn't pop when they hit a pothole or train track.
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Old 05-25-2017, 11:59 AM
God-Follower God-Follower is offline
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Location: Pacific Northwest
 
Join Date: Oct 2014
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Mein Auto: 2015\2016 i3s, F10 535d
I personally would not give up any range. I enjoy eeking out every single mile I can on our i3s, and having had them up to 95 on multiple occasions I do not find the drive characteristics unsettling in the least. The i3 is meant to be a city/urban commuter vehicle, and as long as you look at the car from that perspective it does a great job at handling tight, low speed maneuvers.

We have blown just as many tires on our i3s as we have on our F10 535d hitting potholes, so to me it is not a sacrifice; just something that is. Once we get airless tires then hopefully potholes become much less of a hindrance in normal driving.
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Old 06-05-2017, 07:40 AM
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bocabimmer bocabimmer is offline
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Location: South Florida
 
Join Date: Oct 2012
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Mein Auto: 2007 E92 328i, 2013 X5
I've never had the issues with blow outs; lots of nails because my commute is littered with construction though. I wouldn't mind sacrificing some range for wider tires because I do feel like I slide around a little too much in the turns.


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Old 06-05-2017, 04:04 PM
jadnashuanh jadnashuanh is offline
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Location: NH
 
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Mein Auto: 535ix-drive GT; i3 BEV
The actual tire contact patch depends on the air pressure and the weight of the car on that wheel. The orientation of that patch will change depending on the width and diameter of the tire, so one might end up with better traction for acceleration verses cornering, but depending on the surface, there may not be much difference. WIth the high torque of the electrical motor, a wider tire is more likely to break traction, and cause the stability control to limit power...IOW, your ultimate acceleration rate may be lower, but your cornering speed MIGHT increase. There are lots of variables as to what will optimize a vehicle to its tires. If you like balance, the factory's choice is likely best. If you're trying to optimize one aspect, expect detrimental effects on other aspects. This all assumes you can actually make them fit and you don't overload the bearings by changing the lever arm. Wear might be an issue as well without suspension changes, which can be costly to dial in in both time and tire wear and potentially, safety.
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