The second generation NSX uses wheel bolts that are 14mm in diameter with a 14mm radius (R14) ball seat. To access the bolts, remove the plastic bolt head covers using the factory removal tool (included in the trunk).
If installing aftermarket wheels, make sure to verify what ball seat is cut in to the wheels (may aftermarket wheels use a 60 degree cone seat that is not compatible with the factory R14 ball seat.
It is recommended to use a pair of wheel studs (as shown) to replace two bolts to allow the wheel to be removed without damaging brake components.
The 2017 Acura NSX is equipped with 245/35-19 and 305/30-20 tires. This is the ideal size for both factory wheels as well as wheels like the forged Titan 7 T-S5 from ScienceofSpeed.
Tires for 19/20″ wheels for the street:
The standard factory tire is the Continental ContiSportContact 5P. This tire has a 240 treadwear rating. New to the market and available in factory sizes is the new Pirelli P Zero PZ4 model with a 220 treadwear rating. Also just out from Michelin is the Pilot Sport 4S. This tire is the replacement for the popular Pilot Super Sport. The treadwear rating from Michelin is 300 – however, Michelin seems to always “over-rate” their treadwear – in comparison, this tire is likely more like a 200-240 treadwear from other manufacturers.
Tires for 19/20″ wheels for the track:
The factory optional tire is the Pirelli Trofeo R. This is a high-performance track & competition tire not ideally suited for the street in wet conditions where the tire will be more prone to hydroplaning. However, if you want the best for the track, this is an excellent choice.
Tires for 20/21″ wheels:
The tire availability for wheels with a larger diameter than factory is somewhat limited at the moment. However, as 20″ and 21″ wheels become more popular from OEM manufacturers, more options will start to become available. For 20″/ 21″ wheels with factory width (8.5″ front, 11″ rear), the Pirelli P Zero is available. For wheels with wider widths (20×9.0 & 21×12-12.5) Pirelli P Zero (255/30-20 & 325/25-21) and Michelin Pilot Super Sport (265/30-20 & 325/30-21) are available. It should be noted that the rear tire from Michelin is 1.5″ larger in diameter than factory. Although this does not appear to create a problem with traction control – the tire can rub on the rear fender / bumper mounting point in the fender when the car is lowered. The customer that reported this has a suspension lowered by 24mm. At factory ride height this is likely not an issue. If you’re a die-hard Michelin fan and don’t want to go with the Pirelli, our friends at TireRack report that the Michelin Sport 4S will be available in May 2018 in the Pirelli sizing (255/30-20 & 325/25-21).
Please check out our available wheels for your second generation NSX by clicking here. Have any questions about wheel or tire fitment? Contact ScienceofSpeed – we’re happy to help!