The Barzo now comes with the G+ 2.0 compound that Vittoria claims significantly improves wet grip over the previous G+ 1.0 version. Vittoria makes no claims of improved rolling resistance which means they might have sacrified the low rolling resistance of the G+ 1.0 compound to improve wet grip.

The Syerra feels pretty robust for an 850g tyre. You can really lean it over and slam the bike round corners without the sides bending excessively or burping sealant as some downcountry tyres do. The evenly spread, siped tread does a sterling job in keeping you upright and allowing you to push harder through corners. Grip levels are predictable so there are never any trust issues with the front end, and the tread pattern also makes for a great companion at the rear.Think of it therefore as cross-country-type rubber in the middle and trail-type rubber on the edges. Cycle Centre Congleton Limited 2021. Cyclestore is a trading name of Cycle Centre Congleton Limited. All Rights Reserved Company No. 05107467 | VAT No: 593 733 507 Finance is subject to application, financial circumstances and borrowing history. Performance Cycling Limited FRN: 720557 trading as Tredz are authorised and regulated by the Financial Conduct Authority. We are a credit broker not a lender – credit is subject to status and affordability and is provided by Mitsubishi HC Capital UK PLC. Terms & Conditions Apply. The rounded crown also makes it easier to tip the tyre from side to side when manoeuvring the bike around. There’s a slightly buzzy, bouncy, lively feel, rather than the supple dull smoothness you get from the Teravail Ehline Light and Supple and the Maxxis Rekon 3C Maxx Terra EXO+, but the more open tread really claws at the ground with lots of little edges connecting to the dirt, meaning in dry conditions on buff trails there is loads of friction and bite.

New tech from Vittoria helps make this possible; 4C Compound and Graphene. The 4C process is said to offer versatility to the tire, by allowing for separate base and surface compounds, in both the center and side areas of the tread. Benefiting from the different properties of each compound, including Vittoria's G+ Isotech. Graphene is the newest buzz word for all things fast in Vittoria's world and they are proud to show it off in an updated cross country tire line. Addix Ultra Soft is the enduro and downhill compound found in the Magic Mary and Dirty Dan. Russell Eich / Immediate Media Graphene 2.0 Compound: Vittoria’s unique Graphene compound is superior in rolling performance, grip, traction and longevity. This compound provides the performance benefits required for competitive, consistent racing output. The Original Graphene Compound raised the bar for performance evenly through all disciplines, whereas Graphene 2.0 pin-points the performance requirements from each cycling discipline and enhances them for speed, grip, durability and puncture resistance.

Traditional and ETRTO tyre size tables

It's critical to understand our static wet grip test works with a hard surface. This means the grip data is only directly useful for comparing tires on hard surfaces where the rubber compound creates the grip. Understanding the test results gets more difficult when grip is created by the knobs digging into the surface. Puncture Force Sharp Needle: Pre-2021, this score was known as 'Puncture Resistance'. On some tires with weakly bonded casing wires, the sharp needle can split the casing wires resulting in a lower score. With a relatively open tread pattern, it clears mud with aplomb (Image credit: Aaron Borrill) Performance Compound: Exclusively developed by Vittoria and achieves high-end performance. The 4C is a layering process using 4 separate rubber compounds within the same tread. The 4C construction provides unmatchable versatility in both the central and side tread areas. The finished product is extensively tested to ensure it meets the competition level performance that road and off-road cyclists demand, and benefits the rider significantly, providing better rolling efficiency, better grip and puncture protection.