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DonnellyEMP Tubeless Tire


Item # DLL000L

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  • Black, 700x38mm ($70.00)
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Item # DLL000L

EMP Tire

Continuing with Donnelly's excellent nomenclature of naming its tires after airport codes comes the EMP Tire. For those not in the know, EMP is the airport in Emporia, Kansas which hosts what is arguably the world's most popular gravel race that covers 200 miles every summer. Since that race is almost entirely gravel, this tire's tread differs from Donnelly's other adventure tire offerings which usually feature a well-defined center strip for fast rolling on pavement. Instead, a tighter block pattern over the entire tread and aggressive shoulder lugs are designed to dig in on the loose surfaces.

Make no mistake, this tire is still designed to roll fast, a boon in any long distance gravel race or training, however, with a full complement of knobs, this tire does place its priority on grip and will help find traction on sketchy corners and during steep, out of the saddle climbs. Furthermore, its soft rubber compound provides extra purchase as well and yields some shock absorption over bumpy surfaces.

The Flint Hills are pretty unforgiving and provide a nearly infinite amount of sharp objects that can pierce a tire, so Donnelly wisely integrates a puncture protection belt under the tread to keep you rolling when you're miles from civilization. Its tubeless-ready design means it should mount easily to most tubeless ready rim with a splash of sealant and its casing is reinforced for lower pressures and to ward off premature wear.

  • Donnelly's adventure tire for tackling aggressive gravel
  • Tightly spaced center knobs roll quickly
  • Aggressive shoulder lugs provide excellent cornering traction
  • Tubeless casing lets you enjoy fewer punctures and lower pressures
  • The soft rubber compound is grippy and helps absorb impacts
  • Integrated protection belt under the tread mitigates punctures

Tech Specs
Size700c x 38mm
Protectionprotection belt under the tread
Beadfolding Aramid
Recommended Usegravel
Manufacturer Warranty1 year

Actual Weight

Black, 700x38mm

Claimed Weight

Claimed weights are provided by the vendor.

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1lb 1.1oz

Actual weights are measured in-house by the Competitive Cyclist team.

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What do you think about this product?


>Rating: 1

Same width as MXP 33mm tires!

I've used it once or twice and have initial impressions
Runs small

If you think that because these are labeled 700x38mm that they'll be 38mm wide, you'll be disappointed like I was (but not until after you've mounted them and can't return them). I emailed Donnelly to ask what the deal was, and their reply was that the tire is measured from the bead seat line to the center of the tread. Ok, I own calipers, so I checked. They actually measure 41mm in that manner. So even their odd reply about how their tires are measured is incorrect. Funny thing is, my MXPs in 33mm width measure THE EXACT SAME as the EMPs in 38mm width. Hold both tires up together (as pictured) and they're EXACTLY THE SAME WIDTH. It's almost like they're just putting different tread on the same casing and calling them different sizes (you know, because gravel). I'm torn because I think the MXPs are the best all-around CX tire out there, but this kind of sizing dishonesty and patronizing rationale really sours me on Donnelly as a whole.