The Pirelli P4 Four Seasons is part of the tire
test program at Consumer Reports. In our lab tests, all season tire
models like the P4 Four Seasons 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
Pirelli is based in Milan, Italy, and it has a U.S. manufacturing plant in Rome, Ga. Pirelli caters to the high-end market with tires commonly found on luxury and sports cars. It has a stronger presence in Europe than in the United States, and yet Pirelli offers a full line of replacement tire models to fit most cars and light trucks sold in North America. It is an original equipment supplier to the domestic car manufacturers on selected car models. The Pirelli Group business sectors also include real estate, broad-band solutions, and environmental technologies. In our testing, Pirelli tires often impress us with their dry and wet grip and handling.
Features & Specs - Pirelli P4 Four Seasons
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.
These tire were new when I bought my prius in july 2009 and I have driven 35k on them. Compared to other car/tire combinations I find them to be slightly noisier, very good on wear (about half worn at most), adequate handling and braking. Winter traction seems more limited than usual, but I suspect that is the electric motor torque at fault. <br /><br />I have not been able to exceed 45 mpg in this car. Currently mileage has been averaging around 40mpg. I run tire pressure at 40psi for best mileage - though I have no strong evidence it is helping much. Multiple comments on Prius forums suggest a 4mpg loss from these tires - YMMV.<br /><br />In the last year I have noted a mild thump during low speed operation that is suggestive of a light tread separation. Also the sidewalls are cracked from light curb scrubbing. I expect to replace them soon because of the thumping.
How long have you owned it:
More than six months
No, I would not recommend this to a friend.
from concord nh
p4 lasted me 70000 miles
I am going to buy same tires as I am getting a $80 rebate plus the miles rebate I didn't get out of the tire 15k miles total cost $350 after rebate not counting the missing miles I didn't get out of the tire. 3 years ago the tires cost me 516.25 tire wear house. Getting them at sam's club this time.
How long have you owned it:
More than six months
Yes, I would recommend this to a friend.
A lot of good but some bad
I drive about 70% highway 30% city in Utah. There is a lot that is good about these tires, even though I have only driven about 500 miles on them. They are quiet, comfortable, have good traction on light snow and in dry conditions (too soon to say about tread wear). However, I am trading them in. We have concrete freeways with longitudinal rain grooves, and these tires tramline very badly (that is to say that they try to follow the rain grooves, but they can't make up their minds which groove to follow, so they give a near constant side to side 'zig zagging' feeling that is un-nerving). This is on a 2011 Camry with 31K miles, that has just been 4 wheel aligned. Funny thing is that we have the same tire (different size obviously) on a 2010 Corolla and we don't have this problem. We also had them on a 2000 Mazda Protege and did not have this problem.