The prototype appears to continue the C7 tradition of using
different wheel diameters front and rear with staggered tires, and it also gets blue brake calipers like the previous ZR1, along with what could be carbon ceramic rotors.
Not exact matches
Bolts can have
different tapers,
different diameter shoulders and may or may not include a captive washer, which itself can be
different sizes... Using the wrong bolts will mean you can't tighten them properly, with the risk of them working loose and the
wheels falling off...
That said, be careful if your vehicle has a limited - slip differential or all -
wheel drive, those can be damaged if you have
wheels with
different diameters.
Shock valving and springs are also
different and the Si has much smaller P195 / 60R15 tires on 15 - inch
diameter alloy
wheels while the RSX runs wider tires on 16 - inch
wheels.
There are 13
different exterior colors to choose from and seven
wheel designs, ranging from 18 to 21 inches in
diameter.
The two crown
wheels interface to the spider gears at
different diameters, and so produce
different torque when turned by the spider gears.
The 6 Series Gran Coupe features nine
different wheel options in 18 -, 19 -, and 20 - inch
diameters.
Also, the axle half - shafts are angled more horizontally to align with the
different geometry created by the ZR1's larger -
diameter and wider rear
wheels.