Shop All Categories. 2 x 215/40/17 Zestino Gredge 07R Medium Semi Slick Road Legal Track Day Tyres. These semi-slick tyres from Zestino have been developed to provide superior grip and performance at an affordable price. Available in a choice of soft or hard compounds they are ideal for track days, drifting and performance road use. Semi slick tread pattern for high performance grip levels. E marked for road use. Ideal for track days, drifting or performance road use. Superb performance with an affordable price. The Zestino semi-slick tyres are available in 2 compounds. Gredge 07RS (140 treadwear) Ultimate dry and wet grip. Gredge 07R (240 treadwear) A balance of grip and durability. Motorsport UK List 1B and 1C approved. 04.07.2025, 08:38:20. Demon Tweeks was established in 1971 to service the needs of the motorsport competitor and our principals of offering top products, quality, service and rapid availability are as important to us today as they were in the very beginning. We are leaders in the supply of race wear, competition and road tuning parts for cars and bikes. Within a staff totalling over 140 is a dedicated sales team servicing upwards of 3000 telephone and online enquiries received every day from the UK and the rest of the world. Our impressive 140,000 sq. That means no additional charges or surprises when your item arrives. If your parcel is lost or damaged along the way, the GSP protections and policies will cover you. CAN I CHANGE MY ADDRESS ONCE I’VE PLACED MY ORDER? I’VE ADDED A NOTE TO MY ORDER, CAN YOU VIEW IT? As you may require it in the event of a claim with your carrier. Monday – Friday: 8.30am – 5.00pm. Saturday & Sunday: CLOSED. Also, during periods of high demand, there may be additional delays in us responding.