The Kumho Solus KR21 is part of the tire
test program at Consumer Reports. In our lab tests, all season tire
models like the Solus KR21 are rated on multiple criteria, such as those listed below.
Dry braking is from 60 to 0 mph.
Wet braking is from 60 to 0 mph.
Handling includes how well the tires gripped in an avoidance maneuver involving a swerve into the left lane and back into the right lane; dry and wet cornering grip; and subjective steering feel.
About This Brand
This Korean tire maker started in 1960, and today it is one of the top 10 tire manufacturers in the world. Kumho offers a full array of car and light truck tires. Their tires are noted for excellent value and good all-weather performance, based on our tests.
Features & Specs - Kumho Solus KR21
Speed rating Speed rating. This letter denotes the maximum sustainable speed and is found directly after the load index. For S-speed-rated tires, it's 112 mph; for T, 118 mph. Speed ratings for other tires include Q, 99 mph; H, 130 mph; V, 149 mph; and Z, 150 mph plus. While such speeds may seem wildly impractical, tires with higher speed ratings tend to provide better handling at legal speed limits. Choose tires that have a speed rating at least as high as the one specified on your vehicle's placard.
Treadwear warranty Commonly used by tire manufacturers to market tires, the warranty describes the typical tread life of the tire. Consumers should view the warranty an indicator of tread life only. Actual mileage will vary with vehicle type, driving style, road, and weather conditions, just to name a few variables. Nearly all treadwear warranties are based on pro-rated amount based on the usable tread worn off the tire.
UTQG treadwear UTQGS, which stands for Uniform Tire Quality Grading System, is a federal government required grading system for passenger tires excluding winter tires. Key information includes Treadwear, Traction, and Temperature appearing on the sidewall of a tire. UTQG treadwear, an index developed by the government, compares a tire's tread life with that of a reference tire graded at 100. A tire with a grade of 300 is predicted to last three times as long as one graded at 100. Treadwear grades are just one indicator of tread life, but actual tire life will vary due to a number of factors including road conditions, driving habits, vehicle, and maintenance.
UTQG traction UTQGS, which stands for Uniform Tire Quality Grading System, is a federal government required grading system for passenger tires excluding winter tires. Key information includes Treadwear, Traction, and Temperature appearing on the sidewall of a tire. UTQG traction indicates the tire's ability to stop on a wet surface with Government grades of AA, A, B, C, from best to worst.
UTQG temperature UTQGS, which stands for Uniform Tire Quality Grading System, is a federal government required grading system for passenger tires excluding winter tires. Key information includes Treadwear, Traction, and Temperature appearing on the sidewall of a tire. UTQG temperature indicates the tire's ability to resist heat build-up under test conditions with Government grades of A, B, C, from best to worst.
The tires handle well and are good in the noise department. However, the tread is close to the tread wear indicators, at only 43,000 miles later, echoing the mileage of some of the earlier reviews on these tires. That's a huge gap from 85,000 (Kumho, are you listening? Probably not.). The number of reviews with mileage on the low side also calls into question the trustworthiness of the UTQG rating of 680 that supposedly indicates tread wear life. Maybe a lot (or number of lots) problem ???
How long have you owned it:
More than six months
No, I would not recommend this to a friend.
from Riverside, CA
LOVE my kumho solus kr21 tires
I live in So Cal, Big City so a LOT of street driving but I get out on the Freeways a lot also and I'm completely happy with my tires. I was happy with the price, I bought them on sale week end I LOVE REBATES! I have a Jeep but it's not anything I take off road so these tires are perfect for me. They do have a hum but I don't mind car noises lets me know my car is happy too.
How long have you owned it:
Yes, I would recommend this to a friend.
from Southern New Mexico
Not happy at 7,800 miles
Around town in no problem. On freeway, at higher speeds, vibration that cannot be corrected. Minimized by putting in extreme tire pressure (40 psi). Verified not wheels, driveline, or out of round tire.