ECSTA V710 radials are DOT-legal competition tires developed for drivers who want KUMHO's highest level of performance for dry track conditions. Compared to KUMHO's VictoRacer and ECSTA V700 tires, ECSTA V710 radials are designed to provide quicker "turn-in" response, as well as increased traction and cornering speeds. In addition to looking like pro-level racing tires, ECSTA V710 tires perform like them as well, trading longevity for performance. Achieving the best performance requires that fresh ECSTA V710 tires be used, as their performance level will drop off after a typical race weekend's use.
On the outside, the ECSTA V710 tires mold a high-grip tread compound (that runs with tread temperatures of between 210 and 240 degrees Fahrenheit when pushed to the limit) into an asymmetric tread design utilizing a "slick" tread surface with just two circumferential grooves on the inner half of the tread. This maximizes the rubber-to-road contact to increase grip. Beginning with a tread depth of 4/32-inch, they will not require shaving, however they will benefit from heat cycling before competition. On the inside, the ECSTA V710 features radial construction that uses two slightly angled polyester carcass plies (with one ply wrapping around the bead and returning high up the sidewall to provide three actual sidewall plies). The belt package consists of twin lightweight steel belts reinforced by a spirally wrapped circumferential nylon cap ply under the tread.
NOTE: While KUMHO ECSTA V710 radials meet DOT requirements, they are not appropriate for highway use as the expected miles of wear from their racing tread compounds is greatly reduced.
The VictoRacer V700 is the original competition member of the Kumho high performance tire family. It is a DOT-legal, race-winning tire which, by capturing national championships at the Sports Car Club of America (SCCA) Tire Rack Solo II Nationals and SCCA Road Racing Runoffs, has proven its capabilities in both autocross and road racing competition.
The VictoRacer V700 features an asymmetric tread design molded at 5/32" to 6/32" of tread depth in its two major circumferential grooves. Its tread design features extra wide tread blocks for its outer shoulder (which comprise about 1/3 of the tire's tread width) to maximize cornering grip while promoting tread life (when new, the shoulder blocks are interrupted only by shallow, 1/32" deep lateral grooves). The center and inner shoulder portions of the tread design are comprised of short, stable tread blocks to further enhance handling while providing some wet traction when new (or at near full tread depth). The V700 features a tread compound specifically developed to provide maximum grip, handling and treadlife.
Internally the V700 has two steel belts reinforced with two nylon cap plies to help stabilize the tread area and provide V-speed rated (for 13" & 14" rim diameter sizes) or Z-speed rated (for 15", 16", and 17" diameter sizes) capability. Additionally, three rayon carcass plies with sidewall stiffeners provide high temperature durability and quick steering response. Attractively priced, the Kumho V700 is designed to provide the best traction and treadlife for your racing dollar.
Important Notice: Kumho VictoRacer V700 tires must be shaved to 3/32" - 4/32" of remaining tread depth for any track use in dry conditions.
Kumho advises that the VictoRacer V700 DOT-legal competition radial must be shaved prior to use in dry track conditions. If this tire is not shaved, excessive wear may occur causing the tire to wear to the cords prematurely in a localized area.
Tire heat cycling will not prevent the excessive localized wear of full tread depth tires but will continue to enhance the tire consistency and wear on shaved tires.
The VictoRacer V700 should only be used at full tread depth (6/32") on the track in wet conditions.
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