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X5 F15 (2014 - 2017)
The all new F15 BMW X5 started production August 2013 as a 2014 model year. The new X5 arrives in sDrive35i (RWD), xDrive35i, xDrive50i and a diesel xDrive 35d.

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  #1  
Old 01-07-2018, 06:15 AM
alexvej1 alexvej1 is offline
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Question for increasing wheels size?

Hi I'm owner of 40E 2017 and I have Goodyear run flat 255/50/19 tire on my car
I try to understand why people want to increase to 20 or 21 wheels size.
Except it will be less gap between the tire and subjective may be better look.


What I see there is couple of disadvantages only.
Tires changes become more expensive
19 original cost 864 on TireRack
20 original cost 1316
I didn't check the 21
Not many options of tires become available
You cannot rotate the wheels because rear tires wider than front.
Ride become more hardest because tire has less air caution.
Biggest wheels has bigger weight which will increase car weight and increase load on transmission and consumption of gas.

Just want to know your appinions.
Thank you

Last edited by alexvej1; 01-07-2018 at 06:36 AM.
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  #2  
Old 01-07-2018, 06:29 AM
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Doug Huffman Doug Huffman is offline
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"20 or 21" is not tire size but wheel size, and, yes, it is entirely subjective. Some of your disadvantages are nonsensical.
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Old 01-07-2018, 01:42 PM
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Increasing the wheel size does not change the gap between the tire and the wheel arch. You pair larger wheels with tires that have a smaller sidewall height, so the overall outer diameter of the tire is the same.

The biggest advantage of the bigger wheels is cosmetics. If the difference in looks is not important to you, just stick with your 19's.

Speaking as someone who had an X5 with the 19's and now has 20's, I would NEVER consider going back to 19's. The aesthetic improvement is night and day different, and I will gladly accept the downsides for that improvement.
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Old 01-07-2018, 03:33 PM
plainee plainee is offline
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@rawskyb, any chance you still have the 19s?

Recently bought a '17 dealer stock and all they had was 20s... Really wasn't interested but to make the deal I took it.

Would love to swap for some 19s. I think it looks better and the skinner tires better for our driving style.
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Old 01-07-2018, 04:00 PM
ipak ipak is offline
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Where are you located and what style are your 20" wheels plainee?
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Old 01-07-2018, 05:21 PM
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Quote:
Originally Posted by plainee View Post
@rawskyb, any chance you still have the 19s?

Recently bought a '17 dealer stock and all they had was 20s... Really wasn't interested but to make the deal I took it.

Would love to swap for some 19s. I think it looks better and the skinner tires better for our driving style.
Sorry, no - the 19's were on my 2014 X5 and the 20's are on my 2017.
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Old 01-08-2018, 07:42 AM
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Quote:
Originally Posted by rawskyb View Post
Speaking as someone who had an X5 with the 19's and now has 20's, I would NEVER consider going back to 19's. The aesthetic improvement is night and day different, and I will gladly accept the downsides for that improvement.
THIS.

19s look like donuts. And nobody says “hey that car is driving on a donut and it looks sooooo good”.




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Old 01-08-2018, 12:47 PM
guyinacar guyinacar is offline
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Quote:
Originally Posted by alexvej1 View Post
...why (do) people want to increase to 20 or 21...
Try this easy experiment in your kitchen: Get yourself a couple of simple #2 pencils: one brand new, and one with its eraser worn down by about 4mm. Hold the nice new pencil-top eraser to your countertop, pink eraser down. Hold it firmly. Give it a little wiggle. Now take the other pencil with the stubby little eraser. Give it the same wiggle.

Feel the difference? That difference is the slop in your steering. The faster you drive straight, or the harder you corner, the more it matters.

IIRC, the F15 was offered (or allowed) worldwide shod in OEM rims from 18" to 22". In the US, 19" to 21" are our mainstream options. I think South Africa even had 17's, but maybe I have that wrong.

Like everything else for vehicles, there are trade-offs. Those are well discussed in threads about snow tires. But, briefly: more rubber sidewall means less chance of pothole damage. Less rubber means better feel and tracking. More rubber historically meant less bone-rattling, too, but RFTs have changed the calculus a bit.

And then there are aesthetics, which are entirely subjective. The conceit is that lower profile rubber looks "better." IMHO, I believe it's merely evocative of "performance" in the SoCal Fast and Fuious racer scene, and thus is "better." Out in the boondocks, lifted vehicles with oversized tires are evocative of "performance," as are diesel vertical stacks. But if you think 22s look better, you will certainly have a lot of company. At a minimum, you'll see more shiny rim and less dull rubber.

Last edited by guyinacar; 01-08-2018 at 01:13 PM.
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Old 01-09-2018, 11:22 AM
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JayR04 JayR04 is offline
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IMO, larger wheels, to a point, always look better. I've seen base model cars with smaller wheels and came to the conclusion that it was not a good looking car. Then I saw a higher equipped model with larger stock wheels, it completely changed my perception of that car.

One example is the Model S

The larger wheels make it look more sporty and brings out the lines of the car


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Last edited by JayR04; 01-09-2018 at 11:23 AM.
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Old 01-09-2018, 04:21 PM
sickk23 sickk23 is offline
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Question for increasing wheels size?



Pretty easy to decide which one of these looks better.
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Old 01-09-2018, 04:53 PM
yi5hedr3 yi5hedr3 is offline
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19's are just fine!
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Old 01-10-2018, 03:49 AM
sickk23 sickk23 is offline
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Quote:
Originally Posted by yi5hedr3 View Post
19's are just fine!


Who wants to be “just fine” in this world?


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Old 01-10-2018, 04:15 AM
yi5hedr3 yi5hedr3 is offline
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Different strokes, I guess!
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Old 01-10-2018, 05:17 AM
guyinacar guyinacar is offline
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Just compare a Hennessy Velociraptor against your garden-variety Ford F-150. Over in Fordland, they think more rubber is best. Different strokes indeed.
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Old 01-10-2018, 05:55 AM
yi5hedr3 yi5hedr3 is offline
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Now THAT's some rubber, indeed!
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