January 5, 2018

Tire Evaluation – Maxxis Mammoth

The Maxxis Mammoth is Maxxis’s first attempt at creating a fat bicycle tire. The Mammoth has comparatively low, carefully spaced knobs centre knobs which are made from a harder rubber compound (Double Detection) to attempt to keep rolling resistance and wear to a minimum. The negative knobs are a lot larger and made from a softer compound to provide as much neater grip as you can. On paper, the Enormous appears to be the great fat bicycle tire.

I have analyzed the 120 TPI EXO edition of this Mammoth to determine how it stacks up to other top of the line tires. The 120 TPI EXO variant includes strengthened EXO sidewalls, but no tubeless beads. A 120 TPI EXO/TR variant is available also that includes rubber coated beads that will help seal the tire when utilized tubeless. Strange enough, the 60 TPI version really has the exact same burden as the 120 TPI variant, this is as it doesn’t use reinforced sidewalls. I anticipate the 60 TPI variant for a much poorer tire.

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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.

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Encourages weight of this 26×4.00 120 TPI EXO Mammoth is 1270 g, my sample came in at 1271 g that’s pretty much spot on. The maximum width of this casing is 97 mm, the knobs stick out somewhat further making the entire width 98 mm onto a 65C rim with an air pressure of 16 psi / 1.1 bars.

The knobs at the middle of the bicycle have a height of just 3 mm, which is significantly less than most other fat bicycle tires. The negative knobs are a lot larger and have a height of 5.5 mm. Having a depth of 0.95 mm, the sidewalls are of typical thickness.

At very large air pressures, the rolling resistance of the Mammoth is OKish. When falling air pressure, rolling resistance climbs sharply and ends up in a really large 54.5 watts in an air pressure of 8 psi / 0.6 bars. My guess is that this is because, at higher air pressures, the (nearly) constant center knobs help to keep rolling resistance comparatively low. At lower air pressures, the sidewalls and border knobs become the dominant variable and rolling resistance moves up major time.

I expected more from a first attempt from among the largest MTB tire makers. I didn’t expect a top notch performance in the Mammoth because their normal-sized MTB tires don’t execute that good from the rolling immunity test, but it is a disappointment to find this scooter perform so bad in the very low air pressures many fat bicycle riders prefer to use.

Though rolling resistance is rather high, the Enormous with EXO sidewalls performs quite powerful from the avoidance tests. The sidewalls with this tire are among the most powerful and also have an adequate thickness. Running those in a tubeless configuration should not be an issue in any way. From the tread puncture evaluation, in addition, it performs on the top end of this spectrum. If you’re searching for a powerful scooter, the Mammoth is a fantastic option.

If you operate your fat bicycle tires in air pressures over 16 psi / 1.1 pubs, the Maxxis Mammoth could be a good scooter. Should you prefer to return to quite low air pressures (< 12 psi / 0.8 pubs), the Maxxis will truly begin to drag down you. From the puncture resistance evaluations, the Mammoth performs strongly. The bad part is it's possible to locate more puncture resistant tires offering a lower rolling resistance, reduce weight, and a much superior puncture resistance.

I speed the Maxxis Mammoth 2 out of 5 since this really is Bicycle Rolling Resistance and rolling resistance is the most crucial criteria. I understand fat bikers like to fall air pressures to quite low values to have the ability to ride more than anything.

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