The Continental Grand Prix TT is a tire optimized to acquire those last couple of seconds from the race against the clock. Though the Grand Prix TT was available for a while at the 23-622 dimensions, I am testing a brand new 25-622 variant. After waiting for at least a year for this particular tire to become accessible, it eventually arrived at my door two weeks back. I am not positive whether this brand new 25 millimeter version will be simple to get a grasp of, but the 23 millimeter version is easy to get.
To create the Grand Prix TT a really no compromise drill optimized for speed, it includes only a restricted amount of tread depth. You should not get these tires if you’d like your tires to endure quite a very long time. The TT does include a Vectran Breaker beneath the tread which helps protect against punctures. Continental asserts the Vectran coating only adds a small amount of rolling resistance.
The same as the Continental Grand Prix 4000S II (read review), the Grand Prix TT employs the well known Black Chili chemical along with a 3/330 carcass. On paper, these two tires look very closely linked. The Grand Prix 4000S II has turned out to be a fantastic combination between rate, puncture resistance and tread life. Let us see just how much reduced rolling resistance can proceed in the expense of puncture resistance and tread life.
All rolling resistance evaluations are conducted on our rolling resistance test system. Read our The Evaluation page for a detailed explanation about how we examine tires. Find out more about bicycle pumps by checking out lezyne steel floor drive pump.
Do not forget to have a look at the review pages to make it simpler to compare all of tires which were examined.
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Claimed weight of this 25-622 Grand Prix TT is 190 g; my sample came in at a weight of 195 g. Exactly like the Grand Prix 4000S II, the 25-622 TT measures 27 mm broad in an air pressure of 100 psi to a 17C border. Height is 24 mm, that will be 1 mm less than the 4000S.
Continental asserts this tire for a restricted tread thickness tire, however how restricted is constrained? Using a whole tire depth of 1.9 mm, the TT is a lean tire. The GP4000S II arrived in at a more moderate 2.9 mm. After subtracting the depth of the carcass and Vectran coating, I am estimating the TT to possess near 0.7 mm of usable tread to wear down. The GP4000S II must have closer to 1.7 mm of usable tread. The thin tread signifies tire life is going to be 35 – 40 percent of a GP4000S II.
Please be aware that all these evaluations are performed using the exact same 100 g butyl inner tube. When substituting the 100 g butyl tubing with a latex tubing, rolling resistance will probably be a different 1.5 – 2.5 watts lower (hyperlink). Fitted using a latex tubing, this ought to be among the quickest tires out there.
Low rolling resistance and reduced tread thickness do not relate to a fantastic performance from the puncture resistance evaluation. From the puncture resistance run evaluation, the Grand Prix TT scores a non 8 points. Though tread thickness is extremely low, it will have a Vectran coating that offers some puncture protection. 8 points is akin to this Vittoria Rubino Pro Rate (read review) but considerably lower compared to all-round tires such as the GP4000S II etc that score 11 – 12 points at precisely the exact same test.
From the sidewall evaluation, performance is ordinary. Having a rating of 4 points, the TT scores based on most other street bike tires with no reinforced sidewalls.
If you’re searching for a extremely quick street bike scooter that can shave those last couple of seconds from your time-trial, and you also do not care about tire lifestyle or puncture resistance, the Continental Grand Prix TT is an wonderful tire. To get a set of tires, these can help save you 5 watts over the favorite GP4000S II (read review) or alternative all-round tires which do provide increased mileage and greater puncture resistance.
Fitted with latex tubes, the Grand Prix TT is among the quickest tires available on the sector and will be difficult to beat by even the most effective tubular tires.