They’ll certainly ride quieter because they’re 17s. I’ll let someone like Botond with firsthand experience chime in for acceleration feel, but the extra tire weight would narrow the gap a little bit.
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I'm running Apex ARC-8 17x8.5 square on my ZHP with 245/40/17's and the the weight savings made a very noticeable improvement in acceleration.
Regarding NVH, my tires on my ZHP wheels were cupped and toast when I bought it. They rode horrible and shook the car >75mph. Now everything is smooth.
Thanks everyone. The wheels currently have 245/45R17s on them. The seller thinks they are a square set. My research is showing that the non-M’s had staggered wheels but the M’s had a square set. Does that sound right? That doesn’t make sense to me.
I would double check. My buddy and I are pitting our sets together to make an”daily” set of square 68’s and a “track” set of 68’s by combining are staggered sets. I’ve also come across square sets of 68’s in the wild
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Style 68s only came on non-m e46s as staggered.
I have apex arc-8 17x8.5 that are 10 pounds lighter per wheel than the style 135s. Very noticeable.
I also have a staggered set of style 68s. Can’t tell much better em the two. I think the 68s are 5 pounds heavier per.
How often do y'all change spark plugs and belts, both by time and mileage?
I do 50k miles on plugs, checking every 3-4 years, don't really replace them on age. Belts I check for cracking and splitting. If they're over 80kish/7-8 years I replace them. I'm not sure what BMWs recommendations are, this is just based off of other cars.
FWIW, I have a '95 Impala SS with 28k miles still on the original belts. They look fine, but I don't really drive that car, and if I do, it's not highway. (Car is currently on the back burner until the wagon has a 6 speed.)
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