Review: WTB Resolute 42 650b and 700c Tires

“WTB was founded in Marin County, California in 1982, fueled by the need to create durable and reliable mountain bike-specific equipment. Back then mountain biking was a new and burgeoning sport, and mountain bikes weren’t much more than cobbled-together oddities. The original WTB crew was captivated by the experience of riding bikes on dirt trails, and they started creating more durable and functional components for their own bikes. Soon, local frame builders sought to outfit their bikes with WTB’s high-end components. WTB was able to turn our passion for bikes into a successful business.”

wtb resolute tire review 650b 700c and actual weights

WTB Resolute 42 Tire 650b and 700c x 42mm

Resolute 42 is the ultimate all-weather gravel tire for those who believe there is a perfect tread pattern for every ride. Small, square knobs deliver consistent bite into a variety of terrain, while the ample spaces between them prevent packing up when conditions become fun (aka wet). Truly all-season in nature, its 42mm width makes it a set-it-and-forget-it gravel tire for endlessly undulating roads through all varieties of weather.

wtb resolute tire review 650b 700c and actual weights

The WTB Resolute tire was inspired by Trans Iowa to be an all conditions tire, designed around a rim with an internal width of 23mm. As alluded to above, WTB claims the Resolute performs across all conditions, whether they be wet, dry, sandy, dusty or muddy.

wtb resolute tire review 650b 700c and actual weights
WTB Resolute 42, L: 700c, R: 650b.

The Resolute 42’s are an easy fit into one of Gravel Cyclist’s current review bikes, the Lynskey PRO GR titanium gravel bike, and a former review bike, the Lynskey GR250.

wtb resolute tire review 650b 700c and actual weights

The Resolutes will fit between the chainstays of the Orbea Terra gravel bike (pictured above), another machine we are reviewing at the time of writing.

wtb resolute tire review 650b 700c and actual weights

This is another good example of running a wide 650b tire on a bike designed originally for 700c x 40mm tires. Additionally, the tan sidewalls of the WTB Resolute 42 add a touch of class to the Orbea Terra.

Weighing it up

wtb resolute tire review 650b 700c and actual weights
Resolute sample tire 700c x 42.

For the Resolute 42 in 700c, manufacturer listed weight is 460 grams. As the photos above and below indicate, our review samples came in underweight, which can be seen as a positive, especially if you’re a gram counter.

wtb resolute tire review 650b 700c and actual weights
Resolute sample tire 700c x 42.

The Resolute 42 650b sample tires came in overweight, a little more than the usual  + or – 2% that most manufacturers list to cover themselves for variances during the production process.

wtb resolute tire review 650b 700c and actual weights
Resolute sample tire 650b x 42.

Despite this, the 650b versions are still among the lightest available in this size and width, and certainly the most versatile on paper.

wtb resolute tire review 650b 700c and actual weights
Resolute sample tire 650b x 42.

Mounting the WTB Resolute 650b and 700c x 47mm Tire

WTB’s Resolute tires feature WTB’s TCS (tubeless compatible system) with an Aramid tire bead. TCS is a “system” that also includes rim tape, tubeless valves and sealant. TCS is designed to make tubeless tire setup an easy process.

wtb resolute tire review 650b 700c and actual weights

The sample WTB Resolute tires mounted easily using Bontrager’s TLR Flash Charger pump and WTB’s valves. Expect similar performance from American Classic or Stan’s NoTubes valves. For the duration of the review, the Resolute 42 650b tires were mounted on an American Classic Wide Lightning 650b wheelset, while the 700c version was mounted onto a Hunt 30Carbon Gravel Disc wheelset. Orange Seal’s Endurance Formula Sealant was the sealant of choice for both wheel and tire sizes.

Like just about every other WTB tire we’ve encountered, the Resolutes are intended to be mounted directionally, meaning, pay attention to the rotational arrows on the sidewall (which are a little tough to spot). The rotational arrow on each tire should be in sync with forward rotation of the tire.

wtb resolute tire review 650b 700c and actual weights

A review wouldn’t be proper unless I intentionally installed at least one of the sample tires backwards. I did just that and honestly didn’t notice any difference. Err…

Installation Tips

If you have trouble mounting a tubeless tire, these tips can help:

  • Remove the valve core and inflate. This allows a greater volume of air into the tire and most times, will pop the tire onto the bead.
  • If this doesn’t work, apply something like Sleek Beeswax & Mink Oil Furniture Polish to the sidewall. This product is far better than soap and water, and will help seat even the most stubborn of tires. This product can be purchased from your local furniture store or online.
  • Install your favourite sealant and inflate. Don’t forget to keep a fingertip over the valve if you removed the core. This simple step will retain the air you just inflated; if you’re good at juggling, you can quickly re-install the valve core and still keep some air inside the tire. Then, inflate to the desired pressure.

wtb resolute tire review 650b 700c and actual weights

Above, the Orbea Terra review bike fitted with 700c Hunt 30Carbon Gravel Disc Wheels and WTB Resolute 42’s.

Do the WTB Resolute 42 tires in 650b and 700c measure up?

wtb resolute tire review 650b 700c and actual weights
WTB Resolute 42 650b / American Classic Wide Lightning Wheelset

The Resolutes 42’s in 650b measured 45mm in width mounted to the American Classic 650b Wide Lightning wheelset, which has an internal rim diameter of 29.3mm. For the record, the Wide Lightning wheelset is an MTB wheelset, but it performs perfectly well with a gravel bike.

As suggested on the sidewall of the Resolute, ideal inner rim depth is 17mm to 27mm. Clearly, I went a little over their recommendations with the American Classic wheelset… but I like to bend the rules just a bit.

wtb resolute tire review 650b 700c and actual weights
WTB Resolute 42 700c / Hunt 30Carbon Gravel Disc Wheelset

The Resolutes 42’s in 700c measured 42mm in width mounted to the Hunt 30Carbon Gravel Disc wheelset, which has an internal rim diameter of 21mm.

Riding the WTB Resolute 42 650b and 700c Tires

During the review period, my riding saw all manner of dirt and gravel roads, with a smidgeon of pavement and a little single track thrown in for good measure. Rolling on dry hardpack or dry and loose gravelly conditions, the Resolute is an absolute stellar performer. The tire rolls fast in a straight line across these surfaces, and on the corners, encourages the rider to lean into them just a little more than your average gravel tire.

wtb resolute tire review 650b 700c and actual weights
First ride on the Resolutes, a gravel route with plenty of climbing in Tennessee.

When the road tilts skyward, the Resolute hooks up on the loose stuff with gobs of traction. There is nary a sign of wheel slip or skipping, even when the rider is making a concerted effort to ride hard out of the saddle on an uphill grade.

wtb resolute tire review 650b 700c and actual weights
Resolute 42’s in 650b looking good on the Lynskey PRO GR.

Linking gravel sectors usually involves riding a certain amount of pavement. To be expected, the Resolute’s knobby tread pattern brings a howl to the ears – the sound of resistance. However, considering the versatility of the Resolute 42, a slower ride on pavement is a small price to pay.

wtb resolute tire review 650b 700c and actual weights

Per the numbers on the Resolute’s sidewalls, WTB recommend these tires be inflated to somewhere between 35 and 60psi. At the beginning of the review, I began with 35psi front and 40psi rear on the 650b and 700c sizes. However, I found that even the minimum recommended tire pressures were too high, and only resulted in a ride that jarred me on any decently sized bump or pothole.

wtb resolute tire review 650b 700c and actual weights

Ultimately, I ended up inflating and riding the Resolutes at pressures much lower than that, in order to attain what I felt was the perfect tire pressure for my body weight and riding style. I’m relatively mild on equipment and like to think I’m decently smooth on the bike, even on nasty, bumpy, rough road surfaces. On the scales, I weigh in around 155lbs to 158lbs (70.5kg – 72kg).

wtb resolute tire review 650b 700c and actual weights
Steep Tennessee Gravel.

For the 700c version of the Resolute, I settled upon 28psi front and 30psi rear. For the 650b version, 25psi both front and rear. At these pressures, the ride was sublime. These numbers sound low, but the large casing of both tire sizes consume bumps and ruts at these lower pressures. Readers of this review will need to experiment as I did to find their optimal tire pressure. With that said, I experienced no burping or air loss at any time during the review period.

wtb resolute tire review 650b 700c and actual weights
Single track on the Resolute 42 650b.

Comparing the two sizes side by side, the 650b version doesn’t roll quite as nicely over harsher bumps – to be expected because of their smaller outer diameter – but they make up for it with their ability as a better riding tire in tight, tricky situations, especially if you like to cross train with your gravel bike on single track.

wtb resolute tire review 650b 700c and actual weights
Smashing a gravel descent somewhere in Tennessee aboard the 650b Resolute 42.

Now, all of this riding in nice conditions is well and good, but the Resolute 42 is designed for all conditions. Opportunity knocked several times during some of my gravel rides in wet, sticky and muddy conditions in Georgia, Tennessee, Florida and Alabama.

wtb resolute tire review 650b 700c and actual weights
Resolute 42 700c, somewhere sticky and wet in North Central Florida.
wtb resolute tire review 650b 700c and actual weights
Resolute 42 650b, somewhere in Alabama.
wtb resolute tire review 650b 700c and actual weights
The distinctive tread pattern of the WTB Resolute 42.

I was particularly interested in how the Resolutes would fare in sticky mud – the type that clings to a tire and gradually builds up, until it begins packing up one’s bike and drivetrain – a recipe for disaster.

wtb resolute tire review 650b 700c and actual weights

Somewhere in Alabama, this photo above illustrates the worst of the mud that attached itself temporarily to the Resolute 42.

wtb resolute tire review 650b 700c and actual weights

The mud never stuck around, clearing itself quickly from the tread of the Resolute. WTB really did their homework with the design of the tread pattern on this tire.

wtb resolute tire review 650b 700c and actual weights
More of that sticky Alabama mud.

wtb resolute tire review 650b 700c and actual weights

wtb resolute tire review 650b 700c and actual weights
A moment of pause during a wet Tennessee gravel ride.

Finally, the WTB Resolute 42 tire performs just as well in the wet as the dry. This was proved to me during my very first ride on the tires riding a hilly gravel loop in southern Tennessee.

The video linked above was taken during the Tennessee ride (held on a Saturday) on the Resolutes, and also includes footage from Sunday’s ride – a gravel ride from Greenville, South Carolina onto some sweet roads in and around the edges of the DuPont State Forest, an area well known for its mountain biking. On that particular day, I rode with Boyd Johnson of Boyd Cycling.

Boyd is a former professional cyclist – even on an easy day, he’s probably going to make you suffer. Boyd took the lead all day, on the climbs and on the descents. Thankfully, Boyd took it relatively easy on me during the climbing portions of the ride, most of which came during the first half. But, he pushed his bike and tires hard on the descents, which forced me to push hard too, just to keep up. Incidentally, Boyd was riding WTB’s Byway tire (link to the Gravel Cyclist review).

In light of this fun experience, I would like to thank WTB for making such a confidence inspiring all weather / all terrain tire!

Summary

WTB has a superb tire on their hands in the Resolute 700c and 650b. In fact, just after their release, they sold out! The Resolute really is the best all-weather tire on the market today. It has even relegated an old favorite of mine, the Specialized Renegade 29’er x 1.8″ tire, to the back of my storage closet. This was my former go-to tire for gnarlier gravel rides.

Initially, I had concerns about the sidewall strength of the Resolutes, but after a wee bit of rough treatment in all sorts of terrain and weather, those concerns have been allayed. The sidewalls remain intact sans any signs of damage.

The WTB Resolute 42 tires have an MSRP of $US 67.95, but can be found a little cheaper depending on where you buy.

WTB Tires


Article by Gravel Cyclist. Jayson O’Mahoney is the Gravel Cyclist: A website about the Gravel Cycling Experience.

11 COMMENTS

  1. I just rode these on Grinduro in the 700c model, they did great for considering most of that stuff is mountain bike type terrain. Set them up tubeless which is a pain at first but have gotten zero flats since purchasing in July. I would highly recommend running these tires lower than 30 psi on dirt as I lost a lot of traction climbing at higher pressures. Descending on gravel is a little sketchy around corners on these tires, had to slow down a lot before going in to the corner as I felt like I was going to wash out. All around good, tough tire though, I have never been disappointed in a WTB product!

    • I’d imagine that’s the case given the number of BR articles written by Jayson. Clicking on his name at the top of the article brings up quite a few pages of BR articles produced by him.

      • Hi Robin / TheKaiser… GravelCyclist.com is the first priority for me, along with my regular job, but I freelance for BikeRumor when I have the time. Anything I do related to road / pro Euro bikes is strictly for BikeRumor. I like to keep my content on topic. If there is something on my site I feel the BikeRumor audience can benefit from, I will double post here. Finally, it sometimes depends on how the content / review is sourced. For example, I’ve reviewed several bikes here on BikeRumor and all of those were sourced through here. As an FYI, I have a sweet Canadian Ti gravel bike review in the works for BikeRumor…

  2. First off yea for gravel cycist and WTB. I applaude this size gravel tire. 42-44mm seems to be the sweet spot. A few years back I put 1.9-1.5″ tires on my mountain bikes and 42mm on my cross/gravel bike. They both meet somewhere in the middle. Other than getting more pinch flats on rocky trails I was really enjoying it. I have returned to 2.1 tires on my long distance mtb due to heavier weights on the bike from packing. But the idea is still the same. You don’t need as much tire as most manufacturers would lead you on to belive.
    Other than my 29×3 plus tires for Sandy trails this is where I am happy.

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