WTB Cross Boss cyclocross tyre review

We test WTB's high volume cyclocross tyres on and off road

(Image credit: mike prior)
Cycling Weekly Verdict

The Cross Boss is a great tyre for mixed condition riding, with its high sidewalls meaning that it can be run at low pressures for additional bump smoothing and grip. But the close tread pattern does result in some clogging in more muddy conditions. Clearance and sidewall damage may be issues too.

Reasons to buy
  • +

    High air volume

  • +

    Grippy in drier conditions

  • +

    Tubeless ready

  • +

    Can run at low pressures without bottoming out

  • +

    Fast on tarmac

  • +

Reasons to avoid
  • -

    Tends to clog in wet

  • -

    Not UCI compliant width

  • -

    Clearance may be an issue on some frames

  • -

    Sidewalls prone to cuts

  • -

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

WTB’s Cross Boss tyre is a nominal 35mm width cyclocross tyre. But its main feature is a very high side wall, so that there’s a lot of air volume in the tyre. It’s also tubeless ready and I was able to seat it quickly and get a tight seal on WTB’s own Asym rims using a reservoir pump (although not with a standard track pump).

High sidewalls lead to large air volume for lower pressures and additional comfort
(Image credit: mike prior)

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