SL55/63/65/R230 AMG: Quick wheel question, 19x9.5 et40 in the front.
1. The new BBS RX-R 20x9 et34 is listed for SL55 - it has 3mm less room on the inside than 9.5 et25;
2. Also OZ Superturismo LM 19x8.5 et38 is listed for SL55 - it has identical clearance on the inside as 9.5 et25. (I'm actually surprised it clears the calipers being 38 instead of usual 30-32.)
So yes, I'm sure it would clear on the inside. Of course it was also stated some where above that 9.5 et45 does too, so if you would try fitting 9.5 et40 without any spacers it should definitely(?) fit too, but I think you already tried it and would not have started this thread if it would fit.
1. The new BBS RX-R 20x9 et34 is listed for SL55 - it has 3mm less room on the inside than 9.5 et25;
2. Also OZ Superturismo LM 19x8.5 et38 is listed for SL55 - it has identical clearance on the inside as 9.5 et25. (I'm actually surprised it clears the calipers being 38 instead of usual 30-32.)
So yes, I'm sure it would clear on the inside. Of course it was also stated some where above that 9.5 et45 does too, so if you would try fitting 9.5 et40 without any spacers it should definitely(?) fit too, but I think you already tried it and would not have started this thread if it would fit.
The wheels are off a newer Audi like i said earlier, and the backspacing is 7", typical benz wheels hover around 6"-6.38". 6.38" is the biggest i found on those BBS RX-R.
And yes i did test fitted those on the SL, and they didn't even clear the calipers because the backspacing of the wheels is too much.
I am going to order H&R 15mm 30556659, and try fitting them on. Like you said, i had used the offset calculator and got what exactly you provided. 15mm puts 3mm extra clearance on the suspension side. But i am just not sure if the backspacing come into play.
However, after all this researching, i know 20mm spacers will guarantee to work. But somehow i don't wheels poking pass fenders. So 15mm spacers will do for now, if it still doesn't clear the suspension, i will just stack a 5mm on top of the 15mm.
Thank you so much for you help
The Best of Mercedes & AMG
I ended up ordering 15mm and cleared suspension side but probably 3mm needed to clear calipers side.
But safe to say, 19x9.5 offset 20, will definitely clear suspension and calipers. However, you will have a massive poke.
Anyhow, decided not to use those Audi wheels anymore. Now i have a pair of brand new H&R 15mm hubcentric spacers for sale.
Let me know if anyone is interested, thank you.







