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Dunlop D803 Trials Motorcycle Tire

4.5 (13 reviews)
Dunlop

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(Front) Tire Size - Bias / Radial

80/100-21 - Bias Ply
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Regular: $157.95 Save 29%! Sale: $112.79

(Rear) Tire Size - Bias / Radial

120/100-18 - Radial
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(Front) Specifications and Options

Brand Dunlop
Front / Rear -
Tire Size -
Bias / Radial -
Rim Size -
Tube / Tubeless -

(Rear) Specifications and Options

Brand Dunlop
Front / Rear -
Tire Size -
Bias / Radial -
Rim Size -
Tube / Tubeless -
How To Video - Dirt Bike Rear Tire Changing How To Video - Dirt Bike Front Tire Changing

Product Details

The Dunlop D803 Trials Motorcycle Tire was Geoff Aaron’s 2005 AMA Trials championship tire. The rear D803 tire is a radial that works great for off-road trials riding. Engineered specifically to provide superior grip on rocky or slippery surfaces.


   Features
  • Used by 05-06 champion Geoff Aaron
  • Radial rear tire also works great for off-road trail riding
  • Tube type (TT)
  • M-rated for speeds up to 81 mph

Articles

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    Buying tires for motorcycles from BikeBandit.com is easy and inexpensive, but what do you do when they get to your front door? Here's a guide to help you change your own motorcycle tires.
  • The Off-road Motorcycle Tire Buyer's Guide
    With so many different types of off-road riding, tire buying can be a bit confusing. Let this off-road tire guide help you find the right set of treads!

Specifications and Options

Brand Dunlop
Front / Rear Front, Rear
Tire Size 80/100-21, 120/100-18
Bias / Radial Bias Ply, Radial
Rim Size 21, 18
Tube / Tubeless Tubeless

Q & A

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Browse 10 questions Browse 10 questions and 16 answers
Why did you choose this?
Bike Bandit Store
I was told that it would add five more horsepower to my bike.
#DeadLee
Liesaac F on May 25, 2019
Good value. I like these tires. A lot less expensive than the Michelins. I have been using these for 10 years. Good grip and they last pretty good.
DAVID N on Jan 10, 2018
I was told that it would add five more horsepower to my bike.
#DeadLee
Liesaac F on May 25, 2019
Good life and a solid product
Wendell E on Sep 10, 2018
Good value. I like these tires. A lot less expensive than the Michelins. I have been using these for 10 years. Good grip and they last pretty good.
DAVID N on Jan 10, 2018
Because, tires gotta grip! And when hitting the big rocks, you need the classic D803. My GasGas is now a happy bike!
Damon B on Nov 19, 2016
I use this for competition trials ,Very simular to michelin for the $.
Robert j on Oct 14, 2016
Good life and a solid product
Wendell E on Sep 10, 2018
Because, tires gotta grip! And when hitting the big rocks, you need the classic D803. My GasGas is now a happy bike!
Damon B on Nov 19, 2016
My original Yamaha factory installed front tire is a Dunlop Trials Universal (L-128) 3.00x21 4PR NYLON (with an inner tube). Is the Dunlop D803DG a suitable replacement?

Under Product Details/Features, the D803 is listed as a Tube Type (TT) tire.
Under Specifications and Options, it's listed as Tubeless.

Which is correct? Is it a Tube tire, or a Tubeless tire? If it's tubeless, can I run it with an inner tube on a chromed steel (spoked) rim?

Thanks for your help!
Mark S on Jul 10, 2019
BEST ANSWER: Hello Mark, you should not have any problems using this tire with any type of tube as the inside of the tire should be smooth. To prevent premature wear of your inner tube we recommend properly installing the tube slightly inflated with a decant amount of talcum powder. The powder will allow the folds to become straight inside of the tire and evenly set along the wheel. Don't forget to use a fresh rim band. The rim band will separate the tube from rubbing on the spoke nuts. If you have any more questions please don't hesitate to ask or give us a call. One last thing Mark, when you finish this build, you gotta send us a picture or two.
is the front tire ratio equal to a 3.00 x 21?
Larry H on May 9, 2017
BEST ANSWER: Thank you for your question! A 3.00x21 is the same as a 80/100-21. Please let us know if there is anything else we can do for you by contacting us by email at [email protected], Live Chat or by phone toll free at 1-888-339-3888. We are always more than happy to help.
Are these tires the newer spec Dunlop D803 GP with the new, softer compound?
Ian M on Mar 27, 2018
BEST ANSWER: Thanks for the question Ian! Yes the Dunlop D803 Trials Motorcycle Tire are the revised versions. Please let us know if there is anything else we can do for you by contacting us by email at [email protected], Live Chat or by phone toll free at 888-339-3888. We are more than happy to help.
Rear Tire Size 110/90-18 specified. How does this compare to 4.00-18 size specification?
null on Jun 12, 2012
BEST ANSWER: Thanks for your question! The 110/90 is equivalent to the 3.75-4.25 range
Please let me know if this tire would accommodate a 1.6 x 21 front rim, and if so, what profile size would it be?
null on Jun 7, 2012
BEST ANSWER: Thanks for your question! For further assistance, please contact our sales department at 888-339-3888!
i have a 72 BSA B50t with a 460x18 rear and 275x20 front at the moment... can i use these Dunlops on my bike ?
Beeza on Mar 3, 2012
BEST ANSWER: thanks for your question! Yes these tires will work just fine.
do these handle well on street surfaces ?
ignoramous on Mar 2, 2012
BEST ANSWER: Thanks for your question! This tire will work in the street, But is not recommended for pavement.
how would these handle on pavement on an '79 xt500 ?
thanks
londoner on Aug 6, 2011
BEST ANSWER: Thanks for your question! This tire will work in the street, But is not recommended for pavement.
Is this a tubeless radial tire?
zebb on Aug 25, 2009
BEST ANSWER: Thanks for your question! With the tire your looking at you can find the details under "Product Details" This would be a tube type tire and not a radial, this would be a bias ply

Reviews

4.5 / 5.0
13 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
10
2
0
0
1
Would you recommend
Yes (12)
No (1)
Would you recommend
Yes
Good trials tire at good price
Good trials tire at good price
November 27, 2018
Purchased
over 2 years ago
Would you recommend
Yes
Excellent reproduction, very satisfied
November 1, 2018
Purchased
8 months ago
Would you recommend
Yes
Great trials choice
Always thought the Dunlop trials were a good value for the money. They work well and are not crazy expensive. I am much more likely to throw a new set on for an event than I would with the Michelin tires.
January 24, 2018
Purchased
1 year ago
Would you recommend
Yes
Dunlop 803 tire
Great product great company will do Business with again
June 21, 2017
Purchased
over 2 years ago
Would you recommend
Yes
Awsome tire.
Awsome traction for the trials application.
May 10, 2017
Purchased
over 2 years ago
Would you recommend
No
Really? Less than 300 miles
Bought this tire for riding in Moab. Figured I would try this for all the slick rock and jeeps trails, plus connecting trails on roads. Well to say I'm disappointed is an understatement. After only 270 miles off riding I've got two center knobs almost completely ripped off and 10 or more coming apart. I could see that happening if I was in Johnson Valley and I had done a race, but this is just trail riding and I'm almost 60 years old. I'm going to try a Pirelli MT next just because I have one I got at a good price, if this doesn't last any longer I'm going back to knobbies only.
June 4, 2015
Would you recommend
Yes
Really like this tire
The D803 is my choice for all around riding. It may not be the best in mud, but I try to avoid mud anyway. You can not ride this tire for any distance on the road. You will rip the knobs off. But if you like climbing rocky, rooted hills with turns and loose stuff, you won't find a better tire. Traction is superior to any knobby under these conditions. Slides differently than a knobby in gravel and loose dirt, but still get the job done. Overall I am faster with this tire than any other rear tire I've tried.
August 12, 2013
Would you recommend
Yes
As good as the Michelin/half the price
I've run three Trials seasons on the D803,having run Michelins previously. The Dunlop D803 is a tubeless tire, quite stable even when only running as low as 2lbs. of air. I get a little over a season (1yr.) of frequent practice sessions(4 times/wk) and monthly competitions at the advanced level. The tire does begin to show some sidewall separation as it ages, but this is at the point of being nearly worn out so I have not been adversely affected by it. Doesn't feel any different than a Michelin except in the wallet. This tire hooks up!
November 20, 2010
Would you recommend
Yes
Don't be fooled about tire life !!
Don't be fooled about concerns that these tires will wear out quickly because they are soft. I have been running trials for the past five seasons and I get double the tire life, or more, than I did with motocross tires. These get awesome grip all the way down to the last bit of knobs. I have run Pirelli, Michelin, and IRC, and these Dunlaps are the best value and grip of them all. However only the Pirelli MT43's will get you out of the woods with any speed if you get a flat due to their firm sidewall.

A few things to keep in mind; they soften your ride quite a bit, feels like you changed your back shock. They have less side knobs so you cant hang the bike out sideways on a corner and expect the same grip, but to me the woods are about balance, speed, and grip. And the grip is AWESOME to the point that you have to experience it to explain it, in ALL conditions.

Last notes; these tires are made to run at low pressure on trials bikes, but run them the same as any other tire in the woods. Because they can run low pressure the bead can be very tight on your rim and a pain to mount. Also, I have experienced that these tires can get "stress cracks" around each knob which looks like a problem but I have never had an issue due to these cracks.
October 29, 2010
Would you recommend
Yes
Fastest shipping ever
I ordered this tire at 12:00 p.m and it was at my house at 10:00 a.m the next day. Great tire, Made in the the USA.
March 11, 2010
Rider Reviews - Summary
Overall Review:
4.5
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