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Anyone running 265/40/20 in the fronts on air?
I have black edition wheels and want to put on 265 in the front but worried about airing out and damaging fenders/liners.
I will be putting on michelins pilot sport.
 

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Assuming you want to use Michelin Pilot Sport 4S tires.

265/40-20 will fit the OEM front wheel but it is not stock sized (255/40-20) and is taller than OEM at 28.4". It is not a common size any owners with consider.

You want the front and rear tire diameters to be equal or as close as possible. If you have air suspension and can adjust the ride height then as long as you use a tire size that fits the wheel and is not far off front vs rear then it should be OK.

If your suspension is not adjustable in ride height then you may want to stick to OEM 255/40-20 in front and 285/35-20 in the rear.

If you want more front tire you can use 285/35-20 on both front and rear OEM wheels but clearance will be tight in the front when you lower your ride height- so adjust with your air suspension so that you get a little clearance. Maybe drop 1/2" in front

If you have wider than OEM wheels then you have options with using tire sizes that are slightly larger than OEM for tire diameter but you risk rubbing if ride height does not give you enough clearance.
 
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