Hey guys, I have a z4m coupe. I am running 19” wheels on them. I’ve been having rubbing issues on turns. I paid a shop to install camber plates which he said would resolve the issue but it did nothing. Another guy said I need adjustable lower control arm bushing brackets. But he said he was having issues sourcing them. Any suggestions? Thx
Front wheels rubbing issues
- Thread starter mannymux
- Start date
There's your problem!mannymux said:
You've got 13mm extra poke on the wheel and 10mm extra width on each side of the tyre!
You'd probably get away with a 225/40r19 or a 235/35r19 - but of course wouldn't look as good - so you're looking at either changing the camber on the front via adjustable camber plates on the top of the KWs, or by fitting adjustable control arms/eccentric bushings; or you can remove the wheel arch lining and do some minor bodywork.
It could just be that the wheel & tyre combination is just too big then...although I do see plenty of e46 M3s with similar size fronts, but they're not Z4Ms!mannymux said:
Not specifically control arms, but if you're in the US Turner Motorsport do adjustable front & rear sway/anti-roll bars links and camber arm rods...so maybe they have something suitable (assuming you're in the US).mannymux said:
I had rubbing on the rear with genuine CSLs and OE CSL tyre sizes, but some don't experience any rubbing...it might depend on the brand/model of tyre as some are wider/taller than others - despite the labelling.Justino said:
One variation of the issue appears on the fronts when you put lock on and the wider tyre (possibly on a wider wheel) makes the outside edge of the tyre scrape the wheel arch liner.
The other appears on the rear when you go through a compression and the wider tyre comes up in the arch to hit the arch liner.
I live with an almost constant hole in my rear arch liners (due to 265 rears) and lowered suspension...and just replace them every year or so.
I am standard suspension at present, but thinking about replacing as the rear springs are starting to flake paint and rust. How much lower is your set up that causes rubbing?
With standard the gap between wheel arch and tyre on CSL is about 40mm give or take 5mm as the shoulder of the tyre tapers a little. Car may have settled a little after this photo as had been jacked up to fit new wheels.
Looking on tiresize.com, going from 255-40-18 to 254-30-19, which is the E46 CSL stock size, the wheel is 2.7% smaller. The diameter is 17mm smaller, which in turn increases the tyre to arch gap by 8.5mm which I guess is why lowering with CSL wheels is so popular as you can reduce the gap back or further.
https://www.amazon.co.uk/photos/share/f6BPq3XQkicIv07OikormvNoVYLIZZQS2VBP2S91xMP
With standard the gap between wheel arch and tyre on CSL is about 40mm give or take 5mm as the shoulder of the tyre tapers a little. Car may have settled a little after this photo as had been jacked up to fit new wheels.
Looking on tiresize.com, going from 255-40-18 to 254-30-19, which is the E46 CSL stock size, the wheel is 2.7% smaller. The diameter is 17mm smaller, which in turn increases the tyre to arch gap by 8.5mm which I guess is why lowering with CSL wheels is so popular as you can reduce the gap back or further.
https://www.amazon.co.uk/photos/share/f6BPq3XQkicIv07OikormvNoVYLIZZQS2VBP2S91xMP