Owner
Elite Member
Join Date: Aug 2011
Location: Albuquerque, NM
Ferrari Life Posts: 11,860
Philip- Tire diameter is the determination of ground clearance and the 18" and 19" Maranello wheel and tire combinations are all 26" in diameter, plus or minus about 0.20". The 17" wheel and tire combination on the 456M is also about 26", 26.04" F and 25.98" rear, so changing to 18" or 19" wheels with OEM size tires (255/40 18 F, 295/35 18 R, 255/35 19 F, 305/30 19 R) will not change ground clearance significantly on the 456M.
No problems with scraping on my 575M at all.
On your 456M, I would check and make sure she is at OEM ride height. She may have settled a bit. Assume you already have a 456M WSM from ferraridatabase.com, which contains recommended ride height.
Taz
Terry Phillips
Present: 575M 135171
Past: Dino 246 GT 02984, 365 GTB/4 14009, 308 GTS 25125
Every day I look around, and if nobody is shooting at me, it is a pretty good day.