Offsets Good? 20x11 ET +30 20x12 ET +30

[OhThatGuyJax]

I’m about to order some wheels and wanted to see if these offsets were viable.

20x11 ET +30
20x12 ET +30

I’m going with 295/35/20 up front and 335/30/20 in the rear.. think these clear on the suspension side while not poking out of the fender?

Here’s an old 335/30/20 next to the 325/30/21:

[IMG] image hosting[/IMG]

Edit: now I’m reading that the transfer cases are super sensitive to variations from the exact OEM tire diameters?

Part of me wants to order this set of flow forged 20’s (or maybe even some crazy wide 21x13” forged rear wheels and run 355/25/21 rear tires) but I’m spooked at the possibility of breaking something.

[IMG][/IMG]

[Chilled]

The main thing for the TC, is the diameter difference between the front and rear. Whilst I have no idea, nor have I seen an absolute BMW/ZF specified recommended max % difference. Most people say keep it under 1.5%

So running the 295/35 w/ 335/30 has the same diameter difference as the oem 285/35 w/ 325/30.


Personally I am interested in the offset/custom setup of 295/30 w/ 355/25.

[OhThatGuyJax]

Originally Posted by Chilled

Personally I am interested in the offset/custom setup of 295/30 w/ 355/25.

Same here. I wonder what the perfect offset is for a 13” wide wheel (I’m guessing +37 is ‘hella flush’). I honestly think we could fit a 15” wide wheel in the rear wheel wells. Then we could run some crazy Mickey Thompson 18” wide tires if their weight rating was high enough.


json parser validator

[1004ron]

2015 X5 xdrive35i

I need advice on a set of 3rd party 20" wheels that I'm considering.

I would prefer to keep the standard BMW offset, but these wheels aren't available with that.

The seller came back with this response:

They have a 74.1mm hub bore. For the BMW X5, we run 20x10 +25ET on the front and 20x11 +28ET on the rear. It is a much better flush fitment.

BMW standard:
10Jx20 ET40
11Jx20 ET37


Is it safe to go with what the seller is saying without the risk of rubbing - If the appearance is better, I'm good with that, but don't want hassles.