A lot of people daily drive the same 4x4s they take off-road. And why not? It’s cheaper to daily drive it versus buying a tow rig and trailer. Of course it’s hard to justify running down $2,000 in tires on the asphalt, but it’s not unheard of. This past summer we spent every nice day cruising our M37, and most of the time we were on these new 40-inch Toyos.A lot of people daily drive the same 4x4s they take off-road. And why not? It’s cheaper to Do people really drive on 40-inch tires every day? Yes, as a matter of fact they do. Plenty of four-wheelers have the power, drivetrain, brakes, and wallet to afford such a luxury as running big tires on their daily driver. The problem is there’s not a lot of tires we would recommend for such a job. There are great mud tires, rock tires, and even combination tires, but often as a tire gets larger and more aggressive the requirement for it to be a good street tire diminishes. We recently tested the new 40x13.50R17 Toyo Open Country M/T tire and found that these just might be the perfect daily driving 40s. So what makes a mud tire a good daily driver? Sound, ride, longevity, and not least of all road performance. We were able to test three of these qualities in our short time with this new tire. In the end, it’s a big deal to make a $500 40-inch tire work on your daily driver, but if you are looking for a tire that is big enough to justify your 1-ton axles and big underhood engine, yet calm enough to make driving your trail rig to work every now and then a joy, then here it is. Specifications Make & Model: Toyo Open Country M/T Size tested: 40x13.50R17 Type: Radial Load Range: C Maximum load (lb): 3,195 @ 35 psi Tread: 3 polyester, 3 steel, 2 nylon Sidewall: 3 polyester Tread depth (in): 21⁄32 Tread width (in): 101⁄2 Section width (in): 131⁄2 Overall diameter (in): 393⁄4 Weight (lb): 105 Sizes available (in): 31-40 The radial Toyo Open Country M/T has a reputation as a great all-around tire with low noise, average to good traction, and a resilient wear quality. This new 40-inch variant upholds all those (we didn’t get to test longevity with our short stint on them, but we saw no substantial wear issues) and are an excellent choice for a daily driver.The radial Toyo Open Country M/T has a reputation as a great all-around tire with low nois Finding a shop willing and able to balance tires this big is often a chore, so we mounted the Open Countrys on a set of Mickey Thompson Classic Lock Black 17x9 wheels with 5 inches of backspacing and ran without weights. The tires tracked perfectly with no wobbles, vibration, or odd handling on the street. We had no flat spots after parking it for a few days, and overall street manners were very disciplined.Finding a shop willing and able to balance tires this big is often a chore, so we mounted In the mud these tires worked well. They may not be our first choice as a mud tire, but they are a great Swiss Army tire; good at everything. The tires didn’t seem to clean easily, but even so they kept digging and pulling forward.In the mud these tires worked well. They may not be our first choice as a mud tire, but th On this loose hillclimb the truck took a few different attempts to make it up. We were running about 12 psi, and although the tires flexed well over obstacles we couldn’t hold the traction in such loose terrain. Eventually a full-throttle attack helped us up. The tires are heavy (most 40-inchers are), and driving with a heavy throttle can expose weak drivetrain components.On this loose hillclimb the truck took a few different attempts to make it up. We were run Having tested a few specialty rockcrawling tires with their super-sticky competition rubber compounds, we were expecting to be disappointed by the Toyos just as a comparison. In fact, they worked quite well in boulder crawling. Having a large tire always helps roll over tall obstacles, and the moderate tread design plus lug siping resulted in traction we could depend on.Having tested a few specialty rockcrawling tires with their super-sticky competition rubbe Affording the drivetrain strength and fuel costs of such a large tire isn’t possible for many, but it’s not impossible either, as we see every month in our Readers’ Rides department. We get letters from off-roaders who strive for a tire this big under their 4x4, and we feel the Toyo is a great compromise for a do-it-all-well tire, especially if on-road performance and handling are important to you. And let’s face it, some days you just want to roll up to work in your wheeler so you boss realizes your world doesn’t revolve around work.Affording the drivetrain strength and fuel costs of such a large tire isn’t possible for m SOURCES Toyo Tires 800-442-8996 www.toyotires.com By Fred Williams Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!