Dhs. 4,999.00
SKU: MI-C2-R-31530ZR21-GT3
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This is the Michelin Pilot Sport Cup 2 in 315/30ZR21 (105Y) XL, the rear tyre size for the Porsche 911 GT3 (992). It is Michelin's road and track supercar tyre, engineered to put the GT3 rear-axle power down with strong dry grip while staying road usable.
It suits 911 GT3 owners who want serious traction with more everyday usability than a full track semi-slick. The Cup 2 uses Michelin's Multi-Compound Technology 2.0. This listing is for one single rear tyre. A GT3 needs two rears (315/30ZR21) plus two fronts (255/35ZR20), also available as a full set.
| Tyre model | Michelin Pilot Sport Cup 2 |
| Axle position | Rear |
| Tyre size | 315/30ZR21 |
| Load and speed rating | 105Y XL |
| Vehicle fitment | Porsche 911 GT3 (992) |
| Construction | XL (Extra Load) |
| Technology | Multi-Compound Technology 2.0 |
| Treadwear (UTQG) | 240 |
| Tyre type | Road and track tyre, DOT legal |
| Season | Summer, dry performance |
| Matching front size | 255/35ZR20 |
| Sold as | Single rear tyre |
Yes. 315/30ZR21 is the correct rear size for the 992 Porsche 911 GT3, and this is the rear tyre for that fitment. The front axle uses 255/35ZR20. You need two of this rear tyre for the car.
The GT3 is rear-drive with a high-revving naturally aspirated engine, so the rear tyres govern traction and stability on power. The wide 315 Cup 2 gives fast, consistent lap-time drive that is still road usable.
The standard Cup 2 is the more road-usable choice with a 240 treadwear rating, while the Cup 2 R is the more extreme track-focused semi-slick. For mixed road and track use the Cup 2 rear is the more versatile option.
Front is 255/35ZR20 and rear is 315/30ZR21. This page covers the single rear tyre. For the complete car, choose the Cup 2 full set of four instead.
Which car is this tyre size for?
315/30ZR21 is the rear fitment for the Porsche 911 GT3 (992).
Is this a single tyre or a set?
This listing is one single rear tyre. A full set of four is available as a separate combo listing.
What is the matching front size?
The front size for the 911 GT3 is 255/35ZR20.
How many rear tyres do I need?
Two. The GT3 runs two rears plus two fronts.
Is the Cup 2 usable on the road?
Yes. It is a road and track tyre with a 240 treadwear rating, more usable day to day than the Cup 2 R, though wet performance is limited.
Do you deliver outside the UAE?
Yes. We ship to Dubai and across the UAE, to India, and worldwide.
Supercar Store stocks, fits, and tests performance tyres like this locally in the UAE, so you get expert fitment advice and hands-on support. To confirm sizing, pricing, or a full-set quote, WhatsApp us on +971 50 308 5760 or order on supercarstore.ae. We deliver to Dubai and the UAE, India, and worldwide.
