666M vs 513M

[over5teer46]

hey, i currently own a 2018 F80 comp pack with 666M. If i switch to 513M, how would it handle on the track compare to 666M?

I know i would love it when driving in the city with potholes but on the track, would i loose other characteristics and performance?

thanks!

[c0nrad]

the weight difference is pretty crazy: https://f80.bimmerpost.com/forums/sh....php?t=1293860

[4151zero]

You will be fine on 666m’s initially, but if you start to progress you will want more grip and the tire selection in 18” is much better.

[PayamFSU]

Go for the 19 they have the best tire selection and they look great

[nicknaz]

My $0.02 would be to get wider aftermarket wheels.

+1 on better tire choices for 19s than 18s for the stock wheels

[F80Speed77]

Another +1 for 19's! For whatever reason I don't think 18's look right on the car.

[nicknaz]

Originally Posted by F80Speed77

Another +1 for 19's! For whatever reason I don't think 18's look right on the car.

I liked the look of the 18s on my car but didn’t like they could run the 275 front and 305 rear setup, and there were limited options otherwise.

I had to go with re11 instead of Re71r due to lack of sizing choices

[dth656]

my ZCP came w/ 20" 666M wheels, and I was able to swap for a set of 513Ms a few weeks into ownership:

-the car definitely felt lighter on it's feet (based on butt only, no data to corroborate this)
-not a lot of tire selection for this wheel size (i run michelin PSS)
-i took a front off to get patched once, and i was shocked by how light it was---especially compared to the OEM 18" wheels on my E90 and STi

i'm generally happy with them, although I wish i could get a set of RE-71Rs in this size. since i'm intermediate/slow at the track, i'm ok running the PSS---i like the progressive way they let go, and that they start to make noise near the limit.

[F80Speed77]

Originally Posted by nicknaz

I had to go with re11 instead of Re71r due to lack of sizing choices

Re11???

[nicknaz]

Originally Posted by F80Speed77

Re11???

Tell me about it. Lol

At least they were better than the stock pss tires