Traction Control Needed...

On the rear
If the tires are too wide for the rims, you will have to reduce the tire pressure to get the outboard edges to sit on the pavement, for long tire life, and for maximum use of the rubber for traction. If the pressure gets much lower than 24 or so, you'll feel the rear of the chassis scoot over inside the tires when you enter a turn. This is oversteer so be ready for it. Some say this is crap handling, and yeah for track work I'd agree. But for a streeter, after the learning period, it can be a blast. They say BFGs and CooperCobras are crap tires.... but 295s at 24psi on 10s do pretty good. At least the back now stays in the back. But honestly, if you have 350/400 horsepower your street options are slim pickings.
If the tires are too narrow for the rims, you will have to run extra pressure, which leads to a harsh ride.
I recommended a minimum rim width for a certain street tire size,to be the same size as the tread width.
The size-brand on the tire is only correct on a checking rim of 70% of the brand on account of the brand is a measurement across the sidewall bulges. The tread width of radial tires is about 1.25 to 1.5 inches less than the branded size. So a 255 tire converts to 10.04 and subtracting 1.5 from that yields a rim width of 8.5..And a 235 converts to 9.25 and subtracting 1.25, yields 8.0..And 295 converts to 11.6 and subtracting 1.5 yields 10.1.. a 205 converts to 8.1 and subtracting 1.25 yields 6.8, rounds up to 7.
You can work the formula backward from a certain rim size by adding 1.25 to 1.5 and then converting to metric. For instance that 5.5 Rally is good for (5.5 +1.25)x25.4=171 rounds to 175mm.