whitedug
Posts: 9
Joined: Fri Oct 27, 2017 12:23 am

Will i3s wheels fit an i3 as the offsets seem to be the major difference

Mon Jul 09, 2018 9:52 pm

Had a look at the new i3s and wondering if the i3s wheels would bolt on to an i3? I think they would.

The i3 wheels are 155/70R19 on a 5Jx19 rim with a 43mm offset from the outside of the rim.(ET43) or
for the 20’s - 155/60R20 on a 5Jx20 rim with the same 43mm offset

The i3s wheels are 175/55/20 on a 5.5Jx20 with a 33mm offset (ET33)
The fronts are the one with very tight clearance so moving the tire out 10mm at the centre would explain how they get the 20mm wider tire on.

Cannot find the spec of the rear for the i3s Rex but I’s imagine its the same just with a 10 wider offset.

Shame no aftermarket manufacturer makes the i3s wheel sizes but I’d imagine eventually someone will.

theothertom
Posts: 316
Joined: Mon Mar 20, 2017 6:08 am
Location: South Carolina

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 6:40 am

I think the i3s fenders are flared to accommodate the larger wheels. If so, then they probably wouldn't fit on an i3.
Now, if you could put the flared fenders on an i3......

theothertom
Posts: 316
Joined: Mon Mar 20, 2017 6:08 am
Location: South Carolina

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 6:40 am

theothertom wrote:I think the i3s fenders are flared to accommodate the larger wheels. If so, then the i3s wheels probably wouldn't fit on an i3.
Now, if you could put the flared fenders on an i3......

alohart
Posts: 1357
Joined: Sat Nov 01, 2014 7:36 pm
Location: Honolulu, HI

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 12:23 pm

Several i3 drivers have mounted wider 5.5" rear wheels and 175 mm tires on the front by using at least 10 mm spacers which would be equivalent to using an i3s wheel with 10 mm less offset.

Are i3s fenders the same as i3 fenders but with flares added? If so, there wouldn't be any risk of the wider 175 tires interfering with the fenders. I believe several i3 drivers have used spacers thicker than 10 mm when they mounted wider 5.5" rear wheels and 175 mm tires on the front, yet they haven't reported any tire-fender interference. The i3s flares might be mainly cosmetic but would also block dirty spray from the tires from coating the body panels.
Aloha,
Art

2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE

jadnashuanh
Posts: 4045
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 12:55 pm

FWIW, US (and probably international) safety requirements require some portion of the fender to protect those behind the vehicle from being bombarded by debris picked up by the tread of a tire...so, there is a specification on how much of the tire must be covered by the fenders...while the i3s fender flares may be cosmetic, they are probably also required to pass that safety requirement. The wider tire/fender is one reason why the i3s is not as efficient...higher drag and weight. Only you can decide if the cost/benefit ratio is viable.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

I33t
Posts: 883
Joined: Fri Dec 13, 2013 3:01 pm
Location: Australia

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 3:47 pm

Lol, Jim.

Anytime I visit the US, I regular see some vehicles with tyres wider than the fenders and no flares etc. Jeeps would be the worst, but have seen passenger cars the same.

Here in Australia would be banned pretty quickly for the reasons you mention.
2014 BMW i3 BEV deposit placed 19th Dec 2013
Delivered in Melbourne 4/12/2014. Arrived locally 11/12/14, with 24km on the clock.

whitedug
Posts: 9
Joined: Fri Oct 27, 2017 12:23 am

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 7:07 pm

Thanks all,
I’d say that they probably would bolt on fine based on the fact people are using spacers and getting away with that. (Spacers are illegal in most if not all states of Australia) I had a ok at the mudguards (fenders for us!) and I think they there is enough clearance not to protrude past the mudguards.
The hard part will be getting my hands on a set of i3s or aftermarket rims now.
Anyone know if a aftermarket manufacture makes them?

gt1
Posts: 239
Joined: Sat Nov 07, 2015 7:31 pm
Location: Baltimore

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 7:11 pm

I33t wrote:Lol, Jim.

Anytime I visit the US, I regular see some vehicles with tyres wider than the fenders and no flares etc. Jeeps would be the worst, but have seen passenger cars the same.

Here in Australia would be banned pretty quickly for the reasons you mention.

All the rules apply only to the manufacturers. Once a vehicle is sold its owner can do anything, nobody seems to care. Crazy suspension mods, ghetto HIDs and LEDs, multicolor lights, spiked lug nuts...

viking79
Posts: 99
Joined: Wed Apr 16, 2014 3:04 pm

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 8:26 pm

Many mods people do to their vehicles in the US are technically illegal, but the officials tend to disregard them unless they are looking for a reason to check in on someone.

jadnashuanh
Posts: 4045
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Will i3s wheels fit an i3 as the offsets seem to be the major difference

Tue Jul 10, 2018 8:45 pm

WOnder how many windshields have been destroyed by these jerks...but, agree, the enforcement is almost non-existent. Stupid, IMHO, but that's what it is. Moving the wheel out also affects the alignment and stress on the bearings, if not designed for that. Probably the last thing the recipient of that missile is thinking of is the license plate of the one who caused it, so ramifications would be quite rare for the perpetrator.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

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