Normal
From my opinion, 245/40 and 235/40 have difference in d tyre width only. most of e60 525 m sport r using d 245/40 tyres in Malaysia. i suggest for u 2 go for this setup. n if im not mistaken, d tyre pressure for this are 2.2 FRT n 2.7 RR or 2.0 FRT and 2.4 RR. i suggest u to follow d 2nd setting if u r using RFT tyres. less car floating feeling n smoother ride
