You could go bigger tire on the 10.5" rim. I have 18 x 10 in rear with Nitto 295/45/18 NT555 Series (fit wheel fine). On the front I have 17 x 8 with a 245/45/17, so I am sure you could fit more tire on front as well. I would be sure what you have will fit on your type of car before buying bigger tires. IMO I think bigger tires = better traction. I plan on changing front to wider rim and tire. So the good part for you is just tires. Remember that fitting and looking good are two things. Some combo's look funky either spread on the wheel or big bubble over hang. I would look at the members section on this forum that has detailed description of what each car has in terms of wheels and tires. It is always nice to see what the combo actually looks like before you buy. I should have taken my own advice
