SKU: 14521 | UPC: 086699145215
Michelin Pilot Sport 4 S 325/30ZR21 (108Y) XL for 2016-2019 Porsche 911 GT3 RS GT2 RS
The Michelin Pilot Sport 4 S 325/30ZR21 (108Y) XL is a maximum performance summer tire built for rear positions on supercars like Porsche 911 GT3 RS and GT2 RS. It offers responsive steering firm road contact and consistent grip from street to track. This XL-rated tire supports loads up to 2450 lbs at speeds over 186 mph.
Key Features
- Dynamic Response Technology: Hybrid aramid nylon belt layer ensures accurate steering feedback and dry cornering stability
- ElectricGrip Compound: Dual-compound tread boosts dry braking distance reduction and wet traction control
- Black Track Construction: Heavy-duty internal casing from GT racing extends tire life while maintaining grip levels
- Multi-Compound Tread: Outer shoulder compound for turn-in grip inner areas for straight-line traction
- Raised Rim Protector: Shields alloy wheels against curb rash during parking and aggressive driving
Product Notes
- Summer tire use only store indoors above freezing during off-season
- Rotate every 5000 miles and maintain 35-42 PSI cold for peak performance
- Tire ships deflated in protective sleeve
Installation Notes
- Professional installation recommended.
- Balance align and TPMS reset after mounting
- Compatible with standard bead seating equipment no special hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2019 | Porsche | 911 | GT3 RS |
| 2018-2019 | Porsche | 911 | GT2 RS |
| 2014-2016 | Porsche | 911 | GT3 |
| 2017-2020 | Mercedes-Benz | AMG GT | GT R |
| 2018-2020 | Lamborghini | Huracan | Performante |
Why Choose Michelin?
- Proven in Porsche GT3 Cup racing and Le Mans
- OEM supplier to Porsche Lamborghini Mercedes-AMG
- Engineered with motorsport-derived compounds and casings
Frequently Asked Questions
- Q: Will this tire fit 2016-2019 Porsche 911 GT3 RS rear?
A: Yes OEM size replacement supports factory 21-inch wheels load index 108Y matches specs - Q: What tread compound and construction?
A: Bi-compound electricgrip rubber with aramid-nylon hybrid belt black track casing for durability - Q: What is the tire warranty?
A: 20K mile treadwear limited warranty plus 6-year materials workmanship coverage
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective sleeve dimensions 34 x 34 x 12 inches
- Weight: 31.5 lbs
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