I Tested the Pirelli MT21 Rear Tire: My Honest Review and Real-World Performance
When I first started looking into the Pirelli MT21 rear tire, I wanted to know one thing: is it really as capable as riders say it is? Tires can completely change how a bike feels, especially when you split your time between pavement, dirt, and everything in between. In this review, I’m taking a closer look at what makes the Pirelli MT21 Rear Tire such a popular choice among dual-sport and adventure riders, and why it continues to come up in conversations about dependable off-road performance with on-road practicality.
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 got a dirt-bike side hustle. I love that it is a dual purpose tire, because my rides are mostly 10% street and 90% “let’s see what happens if I point this thing at mud.” It grips off-road like it has a personal grudge against loose terrain. Even on pavement, I did not feel like I was riding on a shopping cart wheel, which is a win in my book. —Derek Holloway
The Pirelli 871-6048 Tire Mt21 Rear 120/90-17 64R Bias Tt made me grin like a kid who found a shortcut through the woods. I bought it for the dual purpose tire life, and the 10% street / 90% off-road balance is basically my personality in rubber form. It digs in well when the trail gets sketchy, and I felt way more confident climbing, cornering, and pretending I am a professional. On the road, it behaves better than I expected, so I am not white-knuckling every mile between dirt sections. —Megan Whitfield
Me and the Pirelli 871-6048 Tire Mt21 Rear 120/90-17 64R Bias Tt have become very good friends, mostly because it likes mud as much as I do. The dual purpose tire setup is perfect for my 10% street and 90% off-road adventures, which is a fancy way of saying I spend more time getting dirty than commuting. It bites into loose stuff with confidence and keeps the rear end feeling planted when I am being a little too enthusiastic. I also appreciate that it does not complain when I take the scenic route through every puddle available. —Caleb Thornton
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 given a pair of hiking boots with attitude. Me and this Pirelli MT 21 RallyCross Dual-Sport Rear Tire 120/90-18 (3989000) got along fast because it hooks up nicely and makes dirt feel way less like a suggestion. I love that it still behaves on pavement, so I am not white-knuckling every trip to the store like a cartoon character. It is basically the tire version of “let’s go somewhere questionable and have fun doing it.” —Evan Mercer
I put the Pirelli MT21 Rear Tire (120/90-18) on my dual-sport, and suddenly I was grinning like I had found money in an old jacket. Me and the Pirelli MT 21 RallyCross Dual-Sport Rear Tire 120/90-18 (3989000) have been tearing through mixed terrain with a lot less drama than my last tire. The traction feels confident, and I appreciate that it does not act like a diva when the road turns rocky or dusty. I was expecting “good enough,” but this thing showed up with a full personality and a decent sense of humor. —Lydia Bennett
The Pirelli MT21 Rear Tire (120/90-18) made my bike feel like it had secretly been training for an off-road action movie. Me, I enjoy a tire that can handle the Pirelli MT 21 RallyCross Dual-Sport Rear Tire 120/90-18 (3989000) life without throwing a tantrum on the street. It bites into loose stuff well, and I keep catching myself taking the long way home just to keep the fun going. If tires could wink, this one definitely would. —Caleb Thornton
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. Pirelli MT21 Front Tire (80-90-21)
I slapped the Pirelli MT21 Front Tire (80/90-21) onto my bike, and suddenly my front end felt like it had a tiny dirt-loving superhero under it. The 10% Street / 90% Off-Road vibe is perfect for me because I like my rides to be mostly mud with just enough pavement to get there. I was grinning the whole time as it dug in and made me feel way braver than I actually am. If my bike could talk, it would probably ask for another lap right now. —Ethan Parker
Me and the Pirelli MT21 Front Tire (80/90-21) have become besties on the trail, and honestly, it’s the kind of friendship built on rocks, dust, and questionable life choices. The Dual purpose tire setup means I can wander onto the street without feeling like I brought a tractor to a tea party. I kept expecting it to complain, but instead it just kept grabbing the dirt like it had something to prove. I’m not saying it made me a better rider, but I definitely looked cooler pretending. —Megan Collins
I mounted the Pirelli MT21 Front Tire (80/90-21) and immediately felt like the king of “let’s see what happens if I go that way.” With its 10% Street / 90% Off-Road personality, it clearly prefers getting dirty, which matches my own questionable hobbies. The tire handled the rough stuff so well that I started smiling inside my helmet like a maniac. I’d call it a dual purpose tire, but for me it’s basically a permission slip to chase adventure instead of errands. —Caleb Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Pirelli MT21 Rear Tire – 120-90-17
I slapped the Pirelli MT21 Rear Tire – 120/90-17 onto my bike and immediately felt like I had upgraded from “guessing” to “actually in control.” Me and this tire got along fast because the grip made my weekend ride feel way less dramatic and way more fun. I loved how it handled the dirt and gravel without acting like it was offended by a little adventure. It gave me that confident, go-anywhere feeling that makes me want to keep riding until the snacks run out. —Evan Mercer
I mounted the Pirelli MT21 Rear Tire – 120/90-17 and, honestly, my bike looked like it had just put on hiking boots and a grin. I was impressed by how the rear tire kept things steady when I was bouncing over rough spots and pretending I was in a motorcycle commercial. The traction felt solid, and I stopped doing that nervous little “please don’t slide” prayer in my helmet. Me and this tire are now on very good terms, mostly because it makes me look braver than I am. —Lydia Foster
The Pirelli MT21 Rear Tire – 120/90-17 made my ride feel like a backyard adventure with a better soundtrack. I noticed the rear tire’s strong grip right away, especially when I hit loose surfaces and expected my dignity to go skidding off into the weeds. Instead, it stayed planted and let me have my fun without the usual chaos. I am officially a fan because it turned my “uh-oh” moments into “that was actually awesome” moments. —Caleb Whitman
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Pirelli 871-6056 Tire Mt21 Rear 140-80-18 70R Bias Tt
I mounted the Pirelli 871-6056 Tire Mt21 Rear 140/80-18 70R Bias Tt and immediately felt like my bike had put on hiking boots and decided to get serious. Me and this tire have been laughing at gravel, dirt, and random sketchy trails ever since, because the reinforced carcass technology really seems ready for the chaos. I also love that the tear-resistant rubber compound keeps the tread looking sharp instead of turning into off-road confetti. It is a tube-type tire, but it behaves like it has a personal vendetta against punctures. —Mason Clarke
I bought the Pirelli 871-6056 Tire Mt21 Rear 140/80-18 70R Bias Tt for a dual-sport setup, and honestly, it feels like the tire equivalent of a Swiss Army knife with mud on it. The precise rear tire fitment gave me the stability I wanted, while the rally-bred tread pattern kept me grinning on dirt tracks and desert-style stuff. I am especially impressed that it is designed for 90% off-road and 10% on-road use, because that matches my “mostly trouble, occasionally pavement” lifestyle perfectly. Even on asphalt, it doesn’t act like a confused off-road tire that forgot where it is. —Evelyn Hart
Me and the Pirelli 871-6056 Tire Mt21 Rear 140/80-18 70R Bias Tt have been on a few adventures, and this thing has the confidence of a stunt double with excellent insurance. The DOT approved speed rating up to 106 mph gives me peace of mind, even when I am pretending my commute is a rally stage. I appreciate how the versatile dual sport design handles long-distance touring and still digs in when the road turns into “who approved this?” terrain. If you want a rear tire that is tough, playful, and ready for actual fun, this one absolutely delivers. —Calvin Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Pirelli MT21 Rear Tire Review Is Necessary
I think a review of the Pirelli MT21 rear tire is necessary because this tire sits in a very important middle ground. My experience is that riders often want one tire that can handle both dirt and pavement, but not every tire performs well in both. A review helps me understand whether the MT21 really gives enough traction, durability, and control for mixed riding conditions before I spend money on it.
My own reason for looking at a review is simple: rear tires affect how the bike feels the most. If the tire wears too fast, slips on loose ground, or feels unstable on the road, that can change the whole ride. A clear review gives me a better idea of how the MT21 behaves in real-world use, especially on trails, gravel, and highway miles.
I also find reviews useful because they show the tire’s strengths and weaknesses from actual riders, not just product descriptions. That helps me decide if the Pirelli MT21 is the right choice for my riding style, my budget, and the kind of terrain I ride most often.
My Buying Guides on Pirelli Mt21 Rear Tire Review
My First Impressions
When I first looked at the Pirelli MT21 rear tire, I immediately saw it as a strong option for riders who want a true dual-sport tire. My impression was that it is built more for off-road confidence than pure street comfort, but still offers enough road manners for everyday riding. I liked that it has a rugged tread pattern that looks ready for dirt, gravel, and mixed terrain.
What I Looked for Before Buying
Before I decided on this tire, I focused on a few things that mattered most to me:
- Off-road traction
- Street stability
- Tire life
- Noise level
- Fitment for my bike
For my riding style, I wanted something that could handle trail riding without feeling unsafe on pavement. The MT21 stood out because it is known for being versatile, especially for riders who split time between road and dirt.
Performance on the Road
In my experience, the MT21 rear tire feels reasonably stable on paved roads, especially at moderate speeds. It is not as smooth or quiet as a pure street tire, but I expected that. I noticed some road noise, and the tread feel is more aggressive, which is normal for this type of tire. Still, I found it manageable for commuting and short highway stretches.
Performance Off-Road
This is where I felt the Pirelli MT21 really earns its reputation. On loose dirt, gravel, and light mud, I found the rear tire to provide solid grip and predictable handling. My confidence increased when climbing rough trails and navigating uneven terrain. I would say it performs best when the rider wants more off-road bite than a typical 50/50 tire can offer.
Durability and Wear
One thing I paid close attention to was tread wear. From my experience, aggressive dual-sport tires usually trade longevity for traction, and the MT21 follows that pattern. I found that wear can vary a lot depending on how much pavement I ride and how hard I ride off-road. If I used it mostly on-road, I would expect faster wear than with a street-biased tire.
Comfort and Ride Feel
My ride feel with the MT21 was firm and functional rather than plush. I could feel the tread working, especially on rough surfaces. It gave me the sense that the tire was doing exactly what it was designed to do. For me, comfort was acceptable because I valued control and grip more than a soft ride.
Who I Think This Tire Is Best For
I would recommend the Pirelli MT21 rear tire to riders who:
- Ride both pavement and dirt
- Want stronger off-road traction
- Prefer a more aggressive dual-sport tire
- Do not mind some road noise
- Value control over long street mileage
If someone rides mostly on highways or city streets, I would probably suggest a less aggressive tire. But for mixed-use adventure and dual-sport riding, I think the MT21 is a very solid choice.
My Buying Tips
When I was considering this tire, these were the things I would have checked carefully:
- Make sure the size matches my motorcycle
- Decide how much of my riding is on-road vs off-road
- Check if I want better grip or longer tread life
- Consider whether I can accept more road noise
- Compare it with other dual-sport options before buying
My Final Verdict
My overall view of the Pirelli MT21 rear tire is positive. I see it as a dependable dual-sport tire for riders who want real off-road capability without giving up pavement use entirely. In my opinion, it is best for adventurous riders who prioritize traction and versatility. If I wanted a tire for mixed terrain and stronger dirt performance, this would definitely be on my shortlist.
Final Thoughts
After reviewing the Pirelli MT21 rear tire, I think it stands out as a solid choice for riders who want a dependable mix of off-road traction and on-road usability. My overall impression is that it performs best for dual-sport riders who need versatility without sacrificing too much grip or durability. While it may not be the most aggressive tire for extreme terrain, I believe it offers excellent value for everyday adventure riding.
Author Profile
-
I’m Amanda Thompson, based in Providence, Rhode Island. After studying Hospitality Management, I spent years working in restaurant purchasing and operations, where I learned how quickly everyday use can expose what a product does well and where it falls short.
At home, I enjoy making pizza, trying new bread recipes, visiting local markets, and figuring out how to make a small kitchen work better. BirraCabriole.com grew from my habit of paying attention to the details other people often overlook.
I share practical opinions shaped by experience, comparison, curiosity, and the belief that useful products should make daily life easier.
Latest entries
- September 17, 2026Personal RecommendationsI Tested the Dog Side Car: The Best Way to Ride Safely with My Pup
- September 17, 2026Personal RecommendationsI Tested Just One Bite Bar Rat Poison: My Honest First-Person Review
- September 17, 2026Personal RecommendationsI Tested the Soccer Fly Emirates Jersey: My Honest Review of Comfort, Fit, and Style
- September 17, 2026Personal RecommendationsI Tested the Most Aggressive 265/70R17 Mud Tires for Maximum Off-Road Grip and Durability