Hi Guys, I posted this in the M5 section but I suppose it's more suited here.

This week I will be fitting a set of 20x10.5 Breyton Race GT's to my M5. I was hoping somebody could help with the offset/spacer situation.

The wheels are ET35, I know factory is ET28. An online calculator tells me that the Breyton will give me 20mm less on the inside and 6mm wider on outside. My questions are,

Will I need a spacer to correct the extra 20mm inside or will it be fine?

If I use a spacer will they rub outside as they are already 6mm wider? (the oem wheels rubbed with a 10mm spacer)

What are your set-ups for your 20x10.5's?

The fronts are 20x8.5, so same width as oem so I'm all sorted on that part,

Any advise would be very much apreciated.

 

what size tires on those 10.5s

 

i use spacer on mine.. the wheels ae 20x10.5 +23.. i put 30mm spacers so become -7.. is really flushh..

 

Tyre is 285 30 20, possibly 285 35 20,

Thanks

 

youll rub on the inside, esp if you get a chunky tire brand like nitto

 

DO NOT GO 35 YOU WILL RUB!!!!

 

if u go for 285, is better 285/25 or 275/30

 

Obviously they will have to sit further out because they're 10.5, but id rather not have them way out.

Do you think a 10mm spacer would be OK? that would mean 12mm closer to inside and 16mm further out than stock?

 

I'm running 285x30x20 Falken fk452 tyres at the back on a 10.5 x 20" wheel with an offset of 26...plus I'm lowered on eibach prokit springs.
I don't get rubbing and may try a 5mm spacer in the spring to bring the offset to 21.

 

Thanks for that,

I will test mount them with a 10mm spacer (that should give me an ET25)