After nearly a year of tantalizing hints, Specialized has finally unveiled its highly anticipated tubeless cotton tires, and cycling enthusiasts are buzzing with excitement. But here's where it gets controversial: is this a game-changer or just another addition to an already complex lineup? Let’s dive in and find out.
Specialized has officially launched a tubeless-compatible version of its beloved Cotton tire, marking a significant milestone for the brand. The Turbo Cotton and Cotton tires have been staples in Specialized’s lineup for years, with the original clincher version famously helping Tony Martin clinch the World Time Trial Championship back in 2012. However, this isn’t the first time we’ve caught a glimpse of them. Keen-eyed observers spotted prototypes with logos hastily covered at the Critérium du Dauphiné in June 2025, hinting that this release has been a long time coming. (https://www.cyclingnews.com/features/new-wheels-aero-hacks-and-an-in-depth-look-at-that-mad-prototype-factor-dauphine-tech-gallery-2025/)
And this is the part most people miss: Specialized’s tire range can sometimes feel overwhelming, so let’s break it down. The original Turbo Cotton, with its iconic golden/yellow sidewalls, remains available in 24, 26, and 28mm sizes—but it’s strictly for tube use. There was also the HOTN (Hell of the North) variant, designed for cobbled classics with added protection and tread, though it’s no longer listed on their site. (https://www.cyclingnews.com/reviews/specialized-turbo-cotton-hell-of-the-north-review-tyres-designed-for-the-cobbled-classics/) Additionally, the 'Turbo Cotton Folding Racing Only' tire, available in 26 and 28mm, features a 320TPI cotton casing and T2/T5 compounds but is also tube-only.
Last year, at Opening Weekend, teams were spotted using the S-Works Turbo TLR tire, recognizable by its distinct sidewall color and hot patch logo. This tubeless-friendly model goes up to 30mm, but riders were clearly craving a larger tubeless option with the feel of the cotton sidewalled tires. Enter the new Cotton TLR, designed to meet that demand. These tires feature a polyester core wrapped in cotton, which likely aids in containing tubeless sealant.
Specialized boldly claims these new tires ‘combine the feel of cotton with the speed and precision of modern tubeless technology.’ Interestingly, their press release reveals that only six pairs of these tires initially existed, and Bora Hansgrohe was so impressed they refused to return them—prompting Specialized to ramp up full production. While this makes for a great PR story, what caught my attention at Opening Weekend was a mysterious clear sealant applied to the outside of the Cotton tires on Red Bull Bora’s bikes. The team mechanic mentioned it was for protection, but we’ll be digging deeper into that.
The Cotton TLR tires will be available in 38, 30, and 32mm sizes, with claimed weights of 280, 290, and 320 grams, respectively. They feature a 320 TPI construction and Specialized’s Gripton T2/T5 compound—the same compound used in the S-Works Turbo TLR, though that model has a 120 TPI casing. (https://www.cyclingnews.com/news/specialized-rolls-out-five-brand-new-road-and-gravel-tyres/) Specialized also notes that the tires are manufactured to ISO standards, though they don’t specify which ones for seamless tubeless setup.
Now, let’s address the elephant in the room: Is this release a revolutionary step forward, or just another option in an already crowded market? Specialized’s marketing emphasizes the unique blend of cotton feel and tubeless performance, but will it live up to the hype? And what about that mysterious sealant—could it be a game-changer for tire protection? We’ll be testing these tires extensively to find out.
What do you think? Are you excited to try the new Cotton TLR tires, or do you feel Specialized’s lineup is becoming too complex? Let us know in the comments—we’d love to hear your thoughts!
