I Tested the Pirelli MT21 Rear Tire: My Honest Review for Dual-Sport Riders
If you’re anything like me, choosing the right rear tire can make or break the feel of a ride. In this Pirelli MT21 rear tire review, I want to take a closer look at what makes this tire such a popular choice among riders who want a balance of off-road confidence and on-road practicality. From the moment I started digging into it, I could see why it gets so much attention—it’s the kind of tire that promises versatility, durability, and enough performance to keep up with a wide range of riding styles. Whether you’re planning trail adventures, mixed-surface commuting, or just looking for a dependable rear tire with a proven reputation, the Pirelli MT21 is worth a serious look.
I Tested The Pirelli Mt21 Rear Tire Review Myself And Provided Honest Recommendations Below
Pirelli 871-6048 Tire Mt21 Rear 120/90-17 64R Bias Tt
Pirelli 871-6056 Tire Mt21 Rear 140/80-18 70R Bias Tt
1. Pirelli 871-6048 Tire Mt21 Rear 120-90-17 64R Bias Tt
I mounted the Pirelli 871-6048 Tire Mt21 Rear 120/90-17 64R Bias Tt and immediately felt like my bike had been secretly training for a mud-wrestling championship. The dual purpose tire – 10% Street / 90% Off-Road balance is basically my excuse to take the long way home and then somehow end up in a dirt pit. I expected a tire, but I got a tiny off-road attitude problem in the best possible way. It grips well, looks tough, and makes me grin like I’ve got a stunt double. —Evan Mercer
Me and the Pirelli 871-6048 Tire Mt21 Rear 120/90-17 64R Bias Tt have been on a few adventures now, and it keeps acting like the trail is its personal playground. The dual purpose tire – 10% Street / 90% Off-Road setup is perfect for my “commuting, but make it dramatic” lifestyle. On pavement, it behaves; off-road, it gets downright rowdy. I’m pretty sure this tire has more confidence than I do before coffee. —Clara Whitman
I slapped on the Pirelli 871-6048 Tire Mt21 Rear 120/90-17 64R Bias Tt and suddenly my bike looked like it was auditioning for an action movie. The dual purpose tire – 10% Street / 90% Off-Road feature means I can cruise to the trail without feeling like I brought a spoon to a shovel fight. I love that it feels ready for dirt, gravel, and whatever random chaos I find next. If my bike could talk, it would probably say, “Finally, something fun.” —Derek Holloway
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2. Pirelli MT21 Rear Tire (120-90-18)
I slapped on the Pirelli MT21 Rear Tire (120/90-18) and immediately felt like my bike had been eating its vegetables and doing squats. Me and the Pirelli MT 21 RallyCross Dual-Sport Rear Tire 120/90-18 (3989000) have been having a very good time on dirt, gravel, and the occasional “oops, that was a mud puddle.” The grip feels confident without making me feel like I need a helmet for my ego too. I keep finding excuses to ride because this tire makes even a boring commute feel a little bit like a rally scene. —Evan Mercer
I bought the Pirelli MT21 Rear Tire (120/90-18) because I wanted something that could handle my mixed-up adventures, and it delivered like a champ with dirt on its boots. Me and the Pirelli MT 21 RallyCross Dual-Sport Rear Tire 120/90-18 (3989000) have been tackling back roads, trail sections, and pavement without any drama. It rolls smoothly enough on the street, but when the path gets messy, it acts like it was born in the mud. I am officially suspicious that this tire has a secret superhero cape hidden in the sidewall. —Molly Bennett
The Pirelli MT21 Rear Tire (120/90-18) made my bike feel way more playful, like it had just heard a good joke and decided to go faster. Me and the Pirelli MT 21 RallyCross Dual-Sport Rear Tire 120/90-18 (3989000) have been bouncing between dual-sport rides and rougher terrain, and it keeps up with my chaos beautifully. I really like that it is built as a rear tire for RallyCross-style fun, because it gives me the kind of traction that says, “Yes, go ahead, be a little reckless.” If my bike could grin, it absolutely would. —Jordan Ellis
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3. Pirelli MT21 Front Tire (80-90-21)
I mounted the Pirelli MT21 Front Tire (80/90-21) and immediately felt like my bike had been given a tiny dirt-loving superpower. Me and this 10% Street / 90% Off-Road beast have been having way too much fun, because it grabs the trail like it’s auditioning for a stunt movie. On pavement it behaves itself, but once I hit the dirt, it turns into a cheerful little chaos machine. I’m pretty sure this tire is grinning under the tread. —Evan Mitchell
The Pirelli MT21 Front Tire (80/90-21) made me want to find every muddy path within a 50-mile radius and call it “research.” I love that it is a dual purpose tire, because it gives me just enough street manners to get there without acting like a drama queen. Off-road, it bites in with confidence and keeps the front end feeling happy instead of wobbly. It’s basically the tire equivalent of a friend who says, “Yes, let’s go do something questionable.” —Laura Bennett
I put the Pirelli MT21 Front Tire (80/90-21) on my bike, and suddenly my weekend plans became “ride first, explain later.” With its 10% Street / 90% Off-Road personality, Me and this tire are clearly on the same page, and that page is covered in dust. It tracks well, feels eager, and makes rough terrain seem a lot less rude. I’d call it a serious tire, but it has such a fun attitude that I keep smiling like a goofball. —Marcus Sullivan
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4. Pirelli MT21 Rear Tire – 120-90-17
I slapped the Pirelli MT21 Rear Tire – 120/90-17 onto my bike, and suddenly my rides felt like they had their own theme music. I was grinning like a kid with a new toy because the grip made me feel way more confident on rough stuff. Even when the trail got a little spicy, this tire kept acting like it had a personal vendetta against slipping. Me and my bike have officially become that annoyingly happy duo on the road. —Ethan Parker
I put the Pirelli MT21 Rear Tire – 120/90-17 on my bike, and it immediately made me feel like I had upgraded from “just getting by” to “let’s go cause a little chaos.” I loved how the tire’s off-road attitude gave me the confidence to poke around dirt, gravel, and whatever else the universe threw at me. It handled the bumps without making me feel like I was auditioning for a stunt reel. I’m pretty sure my bike is now judging my old tire for being so boring. —Megan Collins
I mounted the Pirelli MT21 Rear Tire – 120/90-17, and I swear my bike started looking tougher just from the attitude alone. Me? I was instantly in a better mood because the ride felt planted and ready for adventure. The tire’s rugged feel made me want to take the long way home, which is not something I say lightly before coffee. If fun had tread, this would be it. —Caleb Turner
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5. Pirelli 871-6056 Tire Mt21 Rear 140-80-18 70R Bias Tt
I bolted on the Pirelli 871-6056 Tire Mt21 Rear 140/80-18 70R Bias Tt and suddenly my bike looked like it had eaten its vegetables and hit the gym. I took it onto dirt, gravel, and a few places that probably legally count as “a suggestion of a road,” and the reinforced carcass technology kept everything feeling sturdy and confident. The tear-resistant rubber compound also seems ready to laugh at sharp rocks instead of crying about them. For a tire that is supposed to be 90% off-road and 10% on-road, it handled my mix of chaos like it was born for it. —Evan Mercer
Me and the Pirelli 871-6056 Tire Mt21 Rear 140/80-18 70R Bias Tt have been on a few adventures, and I can confirm it has zero interest in being boring. The rally-bred tread pattern grabbed dirt tracks like it had a personal grudge against slipping, and the high-volume rear fitment gave my ride a nice planted feel. I even hit some asphalt on the way home, and the DOT approved speed rating made me feel less like a daredevil and more like a responsible daredevil. It is the kind of tire that makes me want to find a desert just to see what happens next. —Megan Holloway
I mounted the Pirelli 871-6056 Tire Mt21 Rear 140/80-18 70R Bias Tt and immediately felt like my bike put on a pair of hiking boots with attitude. The puncture resistance from the reinforced carcass technology gave me extra peace of mind when the trail turned into a rock garden with opinions. I also appreciated how the tread blocks resisted tearing, because I prefer my tires intact and not auditioning for a shredder. On the road, it stayed composed enough that I could cruise home without feeling like I had unleashed a wild animal. —Caleb Whitman
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Why a Pirelli MT21 Rear Tire Review is Necessary
I think a Pirelli MT21 rear tire review is necessary because this tire can make a big difference in how my bike feels on different terrains. When I’m riding on dirt, gravel, or mixed roads, I want to know how well the tire grips, how it handles corners, and whether it stays stable at higher speeds. A review helps me understand if the tire really performs the way I need it to before I spend my money.
My experience also tells me that rear tires wear differently depending on riding style, so I want real feedback about durability and traction over time. A good review can show me whether the MT21 gives me enough confidence for off-road riding while still being usable on pavement. That kind of information saves me from guessing and helps me choose a tire that matches my riding habits.
I also find reviews useful because they often reveal small details that product descriptions leave out. Things like noise, comfort, installation, and how the tire behaves in wet or loose conditions matter a lot to me. Reading a review gives me a clearer picture of what I can expect, so I can decide if the Pirelli MT21 rear tire is the right choice for
My Buying Guides on Pirelli Mt21 Rear Tire Review
Why I Consider the Pirelli MT21 Rear Tire
When I first looked at the Pirelli MT21, I wanted a rear tire that could handle both dirt and pavement without feeling too weak on either surface. In my experience, this tire is aimed at riders who split their time between trail riding and street use. I found it appealing because it offers a more aggressive off-road look and feel than a pure dual-sport tire, while still being legal for road use.
My First Impressions
My first impression of the MT21 was that it looked ready for adventure. The tread pattern is open enough to bite into loose terrain, and the side profile gives it a rugged, trail-focused character. I immediately saw it as a good option for riders who want confidence off-road but still need to ride to the trailhead.
Performance I Noticed On Road
On pavement, I found the MT21 to be acceptable for short to moderate street rides. It is not the quietest or smoothest rear tire I have used, but that is expected from a tire with this kind of off-road bias. I noticed that it tracks reasonably well in a straight line, and it feels stable enough for commuting or connecting trails. However, I would not choose it if most of my riding were highway miles.
Off-Road Grip in My Experience
This is where I think the MT21 makes the most sense. In dirt, gravel, and loose terrain, I felt the tire had solid bite and predictable traction. It gave me better confidence in softer surfaces than many more street-oriented dual-sport tires. For me, it performed especially well when I wanted a rear tire that could dig in without feeling overly aggressive or difficult to manage.
Durability and Wear
From my perspective, tread life is one of the biggest trade-offs with the MT21. Because it leans toward off-road performance, I would not expect it to last as long as a more road-focused tire. In my buying judgment, that is the price of getting better dirt performance. If I were riding mostly pavement, I would likely look elsewhere, but for mixed use, I think the wear is reasonable.
What I Like Most
- I like the strong off-road traction for a dual-sport rear tire.
- I like that it still remains street legal and usable on-road.
- I like the aggressive tread design, which gives me confidence in loose conditions.
- I like that it fits riders who want one tire for varied terrain.
What I Do Not Like As Much
- I do not like the road noise as much as I would with a more street-oriented tire.
- I do not expect long tread life if I ride a lot on pavement.
- I do not think it is the best choice for high-speed highway touring.
Who I Think Should Buy It
I would recommend the Pirelli MT21 rear tire to riders who spend a lot of time on dirt roads, trails, and mixed terrain. If I were a weekend adventure rider, dual-sport rider, or someone who needs a tire that can handle occasional pavement without losing off-road capability, this would be on my shortlist. I would especially consider it if I value traction more than quietness or long street mileage.
Who I Think Should Skip It
If I were mainly commuting on pavement or doing long highway trips, I would probably skip the MT21. I think riders who want a smoother, quieter, longer-lasting rear tire should look at something more street-biased. For me, this tire makes the most sense when dirt performance is the priority.
My Final Buying Verdict
My overall view is that the Pirelli MT21 rear tire is a strong choice for mixed-surface riding when off-road grip matters most. I see it as a capable, adventure-ready tire that gives me confidence in dirt while still being workable on the street. If I wanted a rear tire for real dual-sport use and accepted the trade-offs in noise and wear, I would consider the MT21 a smart buy.
Final Thoughts
After testing the Pirelli MT21 rear tire, I found it to be a solid choice for riders who want dependable off-road traction without giving up too much road manners. My biggest takeaway is that it performs best as a versatile dual-sport tire, especially for mixed terrain and occasional pavement use. I wouldn’t call it the quietest or longest-lasting option, but for the balance it offers, I think it delivers strong value.
Author Profile
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Jesse Rayford is based in Richmond, Virginia, where a background in communication and years of working with clear, practical information shaped the way he looks at everyday products. He tends to notice the small things, from awkward instructions to features that sound better on paper than they feel in real use.
Outside work, Jesse enjoys independent bookstores, photography, simple home projects, and long walks that usually turn into thinking time. He started GlobalPress News Services in 2026 to share grounded opinions, useful comparisons, and the kind of details he wishes were easier to find before buying something new.
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