I and others are running the 295/30-18 A6 on an 8" wheel and it actually looks like an optimum fit compared to a 285/30-18 etc., less face/sidewall curvature = bigger contact patch
since the 295/35-17 will have an even longer sidewall than the above (tire OD the same, smaller rim OD for 17") it should work well if it fits the wheelwell
I agree with Keith on the A6 feel even on the oversize tire
"Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car.
Horsepower is how fast you hit the wall, torque is how far you take the wall with you." --Anonymous