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There are parts of the grooves that are not as deep as others. When the tire has worn down to that level, the tread has worn away to the point where they are no longer safe to drive on. The bars are clearly visible going across the tire. Because they have to get a grip in mud, grass and soft ground in general. Log in. Brakes and Tires. See Answer.
Best Answer. Study guides. Q: Why do tires have grooves? Write your answer Related questions. How do I know when to change the tires on a car? Why tires have grooves on their surface? Why are there grooves on tires? What is the reason for tire grooves?
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Still have questions? Find more answers. Previously Viewed. Unanswered Questions. These grooves also provide lateral biting edges that enhance cornering traction on loose surfaces. Lateral Grooves : Lateral grooves intersect their adjacent outboard and inboard circumferential grooves and result in the formation of independent tread blocks.
Tie Bars: Tie bars are short rubber links molded across lateral grooves between adjacent tread blocks. Often used between independent shoulder tread blocks, tie bars connect tread elements circumferentially to reduce tread squirm when rolling, as well as during acceleration and braking. By opposing block movement, tie bars promote stability that help resist irregular wear.
However, as the tie bar wears, the portion of the lateral groove will disappear and reduce into a lateral notch, sacrificing overall tire performance. How does all this apply to r-compound tires? Stay with us here. A lot of other r-compounds claim to be capable of handling wet driving, but that is not the case. A further dive into the treadwear would show they are missing the key elements that are required to be effective in wet driving.
Most r-compounds are made semi-slick in order to achieve overall track performance in the hottest conditions, but end up lacking wet driving proficiency.
This is because some r-compound or race tires only include one groove with multiple tire bars like the tire pictured. This is done to keep the treadwear at or below, thus providing exceptional dry grip during hot dry race days. So how does the Accelera Sport compare to the rest? The overall design of the Accelera Sport has a pattern that is almost exclusively a groove design. A combination of circumferential, lateral grooves, and connecting tire bars across the entire surface of the tire aid in exceptional water disposal in wet conditions.
This design is also equipped with deep dimple grooves that work to break the water film layer on the surface, while also cooling the tread surface during dry conditions. Because of this, the Accelera Sport features a three-groove design which provides grip in any condition you drive it in. So the next time you wonder what those grooves are and why they matter, just remember.
Check out this testimonial from our guy Rafael on how the Accelera Sport handles in wet conditions:. Compared to R which feel like your car is ice with even the slightest wet pavement. I recommend these to anyone looking for an economical alternative to Toyo and Nitro.
They accel on: off the track. Time attack, autocross, or even drift.
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