235/40 is a close fit expected to rub at the rear with weight in the boot, full load etc. If you're wheels are bboss then they're probably a +45 offset, which is OK with 235, BUT pushing clearances close. I'd suggest you'll need to have the rear guards rolled for clearance but would otherwiseby OK.
+48 or +50 are better offsets for 235 fitments, but are uncommon except foir RX-8 rims, and you'll notice heavier steering etc. With what you're proposing, slightly lighter steering and a touch more torque steer could be expected.
Originally Posted by
mazda6mps
Am thinking of a new direction for the mps6 - lowering, exhaust and rims
I already have my mind set on what I want with lowering packages, exhaust, but am undecided about the rims.
Currently been offered B.boss package (Maddison) fitted/balanced, etc for $1835 (inc tyres), but they are proposing 235/40's on the rims (Kumhos).
So i am wondering whether anyone is running 235/40's, has there vehicle lowered, without rolling the guards or will I need to do this in due course?
Cheers
"Blue Meanie" 2007 Aurora Blue MPS 3 - 18x8.5+44 SSR GTX01 - 235/40R18 Michelin PS5 - 3.5" ETS TMIC - CPE stg 2 mount - HKS/CPE BPV - 2XS inlet - 2XS short shift - Corksport turbo manifold - HT 98 octane tune - Leather/Aluminium handbrake - Momo shifty knob - 7" touchscreen - JDM Mazda Retractable dashtop screen assembly - Bespoke Raspberry Pi Android based GPS/Carplay and instrumentation - 36AH reserve battery and C-TEK isolator - TEIN Street Advanced coilovers 1" drop - Superpro bushings - 220Kw/410Nm.
"Lipstick" 2013 Velocity Red MPS 3 - 18x7.5+48 Enkei RPF1 -225/40R18 Federal RS-RR - CPE TMIC - COBB inlet - CPE stg 2 mount - COBB Stage 1 98 octane tune - COBB shifty knob - 2XS short shift - 2XS turbo manifold.