Get deals on automotive parts, truck parts and more. You may submit your information in our contact us form. Tire profiles are designed with specific rim widths in mind, and in some cases putting a wider tire on narrower rim can pinch the tire so much that the contact patch becomes smaller. If you could place a car on a glass floor and look at it from below, you would see four patches of rubber, most folks are surprised at the size of these four patches, depending on the vehicle each patch is a little smaller than a hand. How to permanently repair a flat tubeless motorcycle tire.
Choose from our selection of tire repair patches, including tire patch kits, preventaflat sealants, and more. If its time to get new motorcycle tires, youre most certainly in the right place. Sorry to say this folks, but to very close to 100% accuracy, the size of the contact patch is irrelevant. The contact patch is the only connection between the road and the vehicle. The contact patch of a tyre is the section of the tyres tread that is in physical contact with the road surface.
Spin, longitudinal and side slip, the width effect. This part covers the dynamics of a tires contact patch. A good rain tire will have a center line, most performance tire have the reverse tread because when the bike is leaned over, the tread would push the water away to the outside of the lean better, if the tread is not reversed, when leaned over water will be pushed to the inside of the lean or the direction the bike is cornering leaning into. A car tire fitted to the rear of a motorcycle will lift the contact patch as it gets up onto the edge of the tire, whereas on a motorcycle tire its a smooth transition and you dont lose much contact patch at all. It feels like you have lost control of the motorcycle as the car tire contact patch leaves the ground on a turn.
With a soft sided tire, like a drag slick for example, the width of contact patch varies widely based upon air pressure and load. We are a family owned business specializing in tires, brakes and chains for over 30 years in the motorcycle industry and our professional staff are qualified as the premier experts in north hills for all of your motorcycle needs. In addition to tires, bridgestone manufactures diversified products, which include industrial rubber and chemical products as well as sporting goods. Pacejka, in tire and vehicle dynamics third edition, 2012. The tire contact patch, or tire footprint, is the area of the tire that directly connects the vehicle with the driving surface. Mcgee company can do outside training in addition to the in house training we do for proper tire repair and tire patch usage at your request. But on a twowheeler, with only two small patches of rubber. This is part 6 of my 10 part series on how race car tires tyres work.
In addition to tires, bridgestone manufactures diversified products, which include industrial. Jul 02, 2016 this is part 6 of my 10 part series on how race car tirestyres work. Tires with a higher profile or aspect ratio that is, the height of the sidewall is fairly large compared to the width of. Chris pfefferle, president of pfefferle tire and automotive service in fairfield, ohio, says its fine to use a tire patch when the hole or puncture measures less than a quarterinch in diameter but you also need to consider the location of the puncture. The width of the contact patch has a considerable effect on the torque and indirectly on the side force because of the consumption of some of the friction by the longitudinal forces involved. If its located between the two tread blocks, then its ok to patch, pfefferle says. Rear triply carcass, less flexible sidewalls, increased knob strength and a larger contact patch, improves traction in whoops and on squareedged bumps. Buy tire repair patch bk 7101051 online from napa auto parts stores.
Best motorcycle tire repair kit how to choose the right. Do you ever get balls or lips on the leading or trai. Choose from our selection of tire repair sealants, including preventaflat sealants, tire patch kits, and more. Once done you have a picture of the tire contact patch, and can easily measure the size of the. Dec 15, 2017 a car tire fitted to the rear of a motorcycle will lift the contact patch as it gets up onto the edge of the tire, whereas on a motorcycle tire its a smooth transition and you dont lose much contact patch at all. Bridgestone motorcycle tires your journey, our passion. Visit us for all of your maintenance and repair needs. If you are new to myers tire supply, please register as a new user above. Contact patch vs grip school questionsgeneral discussion. Dec 27, 20 a bigger contact patch does not give a tire more resistance to sliding.
Mar 05, 2020 the patch will stay in place with the aid of the rubber cement you applied and the air pressure from inside the tire. From point a to point b, somewhere near the midline of the contact patch, the tread stays stuck to the road at this slip angle anyway and lateral deflection in the carcass and. A larger contact patch more grip okay, most people will come to the conclusion that if you have more rubber on the road you will have increased grip. This might not be a bad thing, provided we always rode with no need to turn or swerve sharply. This force could be the weight of a motorcycle pressing the tire into the pavement, or the clamping force pressing two pieces of wood together. The contact patch on a motorcycle tire is much larger than a cars. Whats the point of having a larger tyre contact patch. M c tire works inc motorcycles motor scooters and atvs. This guy analyzed some automobile tire manufacturer, and although the info was selfconflicting, he concludes that it very much depends on tire construction, but the equation is for sure false. Why do motorcycle front and rear tires have opposite tread.
Our professionalism sets us apart from the competition. The size and shape of the contact patch, as well as the pressure distribution within the contact patch, are important to the ride qualities and handling characteristics of a vehicle. It allows you to maximize your tires contact patch with the road allowing you to attain optimal traction while avoiding the negative effects that other tires might give you such as poor handling, steering, etc. Inch up is the process of mounting a lower aspect ratio tire and larger diameter wheel on your car. While the actual contact patch cant be seen by simply glancing at a vehicle, it is easy to see its location by viewing the profile, or outside of the wheel. My love for motorcycles dates back to my childhood years when i attended the 2005 motogp at laguna seca. Bridgestone proprietary technology visualizes and measures contact patch behavior to maximize performance with. Winter season all customers please call prior to arrival during the december and january months. Mcmastercarr is the complete source for your plant with over 595,000 products. Tire repair patch bk 7101051 buy online napa auto parts. This part covers the dynamics of a tire s contact patch. Colorized tire footprint pressure distribution contact patch is the portion of a vehicles tire that is in actual contact with the road surface. Mitas have combined all of their racing experience into the mitas mc50 motorcycle tires noted for its modern sports design and sporty driving characteristics. The contact patch is a combination of tread, tread grooves and any other tire design features such as siped rubber, which maintain contact with the road as the tire rolls.
Let your tires cool off remember, tires heat up when you ride and that heat can affect your. Further, note that the drawings of the motorcycle tire contact patch show a. Do you ever get balls or lips on the leading or trailing edge of the tread pattern on your motorcycle tires. In addition, the shape of the contact patch will influence the performance of the tire and the vehicle its mounted on.
As an apprentice to my mechanic father, i learned a lot about. The contact patch of the car tire flattens on the bottom as it is designed to do keeping more half the tread on the pavement, even in full out, pegdragging turns. The design of the contact patch is an engineering feat that is specific not only to each manufacturer, but for each individual tire. For high performance driving, the tires contact patch would. This relationship allows myers tire supply to provide you with the industrys best tire repair products and the knowledge of how to use them. Jan 25, 2014 the tire contact patch all vehicles are supported by a cushion of air contained in four flexible rubber tires. Feb 09, 2012 the contact patch of a tyre is the section of the tyres tread that is in physical contact with the road surface. The contact patch is that portion of the tread in contact with the road surface at any given time. This design allows pneumatic tires to possess the most versatile traction options at both low and high speeds.
Mitas mc50 motorcycle tires buy direct from motorace. Noting the relevant drawings, we see that at zero lean angle, the car tire has a much larger contact patch than the bike tire. The contact patch for the cartire exceeds the size of the contact patch on the the only mc tire i had measured on this bike avon. Wider and flatter tire profile improves contact patch mc clay firmness compound. This is part 6 of my 10 part series on how race car tirestyres work. Rear tire features a reversible tread pattern to prolong tire life and consistency. Call today to schedule and appointment at 18005258888. Use a tire pressure gauge to see how low the motorcycle tire may be. The contact patch for the car tire exceeds the size of the contact patch on the the only mc tire i had measured on this bike avon. The force of friction is proportional to the normal force fmu x n, where f is along the surface and n is perpendicular to. When you install wider tires without changing anything else, the size of the tires contact patch i. It is commonly used in the discussion of pneumatic i. A bigger contact patch does not give a tire more resistance to sliding.
If you have an existing account with myers tire supply, please contact our customer service team at 8009989897. Furthermore, for the actual tire with carcass compliance, the spin torque will. Contact patch area optimization agility, and new level of response in hard handling. Bridgestone proprietary technology visualizes and measures contact patch behavior to maximize performance with great grip and mileage.
The dark side the love of car tires on motorcycles haul n. Bridgestone corporation is the worlds largest tire and rubber company. Dense knob layout provides a large and stable contact patch for improved cornering grip, traction and stability. Mar 25, 20 with a soft sided tire, like a drag slick for example, the width of contact patch varies widely based upon air pressure and load.
The contact patch will vary in shape and size depending on the geometry of the tire, and this affects various performance characteristics of the tire. Tires with a higher profile or aspect ratio that is, the height of the sidewall is fairly large compared to the width of the tire, tend to have a long and narrow contact patch. In wet weather with a car tire on your bike you will have less water dissipation and the bike could be fundamentally dangerous. The contact patch will vary based on tire design, construction materials, the type of tire, tread and shoulder design and sidewall construction. If you enlarge the contact patch by making the tire wider, you get more grip and that larger contact patch dissipates more heat and provides. And on wet roads, expect loss of traction and hydroplaning due to the reduced weight per square inch of contact.
Its tread pattern ends already before the edge of the tire shoulder to facilitate an optimum contact patch at maximum lean angles. Jan 14, 2017 tire profiles are designed with specific rim widths in mind, and in some cases putting a wider tire on narrower rim can pinch the tire so much that the contact patch becomes smaller. Since the wear characteristics of tires is a highly competitive area between tire. The patch will stay in place with the aid of the rubber cement you applied and the air pressure from inside the tire. But you also need to consider the location of the puncture. Tire contact patch shape length vs width post wed aug 01, 2012 4. The tire contact patch all vehicles are supported by a cushion of air contained in four flexible rubber tires. The tire carcass has some stiffness and the tread is even more stiff, so there has to be some deflection starting well before the tire rotates into the contact patch.
Contact patch is the portion of a vehicles tire that is in actual contact with the road surface. If its located between the two tread blocks, then its ok to. A complete stock of tire repair tools is available. Tire contact patch lowering pressure gain traction. It differs for different types of tyres and sometimes under different road conditions. Mcgee company offers rema, prema, and mcgee tire repair patches to service all sizes of tires. The dark side the love of car tires on motorcycles. Explore how bridgestone motorcycle tires use cutting edge technology to help you keep your grip on any road. Tire profiles are designed with specific rim widths in mind, and in some cases putting a wider tire on narrower rim can pinch the tire so much that the contact patch. Chris pfefferle, president of pfefferle tire and automotive service in fairfield, ohio, says its fine to use a tire patch when the hole or puncture measures less than a quarterinch in diameter. We are a full service automotive repair and maintenance shop serving the moline area with many years of consistent and friendly service. Motorcycle tire pressure recommendations and checks. Further, note that the drawings of the motorcycle tire contact. Feb 21, 2020 the contact patch on a motorcycle tire is much larger than a cars.
1005 288 1217 824 776 646 1164 1152 1310 418 9 462 716 379 1187 1418 109 1538 1063 247 1349 683 1463 710 227 955 376 1477 338 325 1490 1187 76 336 683 180