Use a tire pressure gauge to see how low the motorcycle tire may be. Colorized tire footprint pressure distribution contact patch is the portion of a vehicles tire that is in actual contact with the road surface. This design allows pneumatic tires to possess the most versatile traction options at both low and high speeds. Dec 27, 20 a bigger contact patch does not give a tire more resistance to sliding. Winter season all customers please call prior to arrival during the december and january months. But on a twowheeler, with only two small patches of rubber. Motorcycle tire pressure recommendations and checks. This relationship allows myers tire supply to provide you with the industrys best tire repair products and the knowledge of how to use them. Bridgestone proprietary technology visualizes and measures contact patch behavior to maximize performance with. Call today to schedule and appointment at 18005258888.
The contact patch is that portion of the tread in contact with the road surface at any given time. M c tire works inc motorcycles motor scooters and atvs. Once done you have a picture of the tire contact patch, and can easily measure the size of the. Tire repair patch bk 7101051 buy online napa auto parts. 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. We service any tire, battery, or wheel, because we cater to the customer.
In addition, the shape of the contact patch will influence the performance of the tire and the vehicle its mounted on. Buy tire repair patch bk 7101051 online from napa auto parts stores. Pacejka, in tire and vehicle dynamics third edition, 2012. Why do motorcycle front and rear tires have opposite tread. 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. 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. It is commonly used in the discussion of pneumatic i. This is part 6 of my 10 part series on how race car tirestyres work. Tire contact patch lowering pressure gain traction. 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. With a soft sided tire, like a drag slick for example, the width of contact patch varies widely based upon air pressure and load. Check tire specifications take a look at the tire sidewall to see how much air should be in the tire. 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.
This is part 6 of my 10 part series on how race car tires tyres work. 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. 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. The tire contact patch all vehicles are supported by a cushion of air contained in four flexible rubber tires. Mcgee company offers rema, prema, and mcgee tire repair patches to service all sizes of tires. The patch will stay in place with the aid of the rubber cement you applied and the air pressure from inside the tire. For high performance driving, the tires contact patch would. 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. 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 vs grip school questionsgeneral discussion. 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. Tire contact patch shape length vs width post wed aug 01, 2012 4. When you install wider tires without changing anything else, the size of the tires contact patch i.
Mcmastercarr is the complete source for your plant with over 595,000 products. Furthermore, for the actual tire with carcass compliance, the spin torque will. 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. The force of friction is proportional to the normal force fmu x n, where f is along the surface and n is perpendicular to. 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 contact patch will vary based on tire design, construction materials, the type of tire, tread and shoulder design and sidewall construction.
Mitas have combined all of their racing experience into the mitas mc 50 motorcycle tires noted for its modern sports design and sporty driving characteristics. And on wet roads, expect loss of traction and hydroplaning due to the reduced weight per square inch of contact. 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. The dark side the love of car tires on motorcycles. 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. Explore how bridgestone motorcycle tires use cutting edge technology to help you keep your grip on any road. This might not be a bad thing, provided we always rode with no need to turn or swerve sharply.
Noting the relevant drawings, we see that at zero lean angle, the car tire has a much larger contact patch than the bike tire. Do you ever get balls or lips on the leading or trai. Further, note that the drawings of the motorcycle tire contact. 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 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. Feb 21, 2020 the contact patch on a motorcycle tire is much larger than a cars. If you are new to myers tire supply, please register as a new user above. 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. Bridgestone proprietary technology visualizes and measures contact patch behavior to maximize performance with great grip and mileage.
Jul 02, 2016 this is part 6 of my 10 part series on how race car tirestyres work. If its time to get new motorcycle tires, youre most certainly in the right place. You may submit your information in our contact us form. This part covers the dynamics of a tire s contact patch. Rear tire features a reversible tread pattern to prolong tire life and consistency. If its located between the two tread blocks, then its ok to.
This part covers the dynamics of a tires contact patch. Each of these four small patches of rubber is known as the contact patch. Since the wear characteristics of tires is a highly competitive area between tire. It differs for different types of tyres and sometimes under different road conditions. My love for motorcycles dates back to my childhood years when i attended the 2005 motogp at laguna seca. Whats the point of having a larger tyre contact patch. The contact patch is the only connection between the road and the vehicle. But you also need to consider the location of the puncture. 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. Visit us for all of your maintenance and repair needs. Our professionalism sets us apart from the competition.
The contact patch on a motorcycle tire is much larger than a cars. If its located between the two tread blocks, then its ok to patch, pfefferle says. A bigger contact patch does not give a tire more resistance to sliding. 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. In wet weather with a car tire on your bike you will have less water dissipation and the bike could be fundamentally dangerous. Inch up is the process of mounting a lower aspect ratio tire and larger diameter wheel on your car. A complete stock of tire repair tools is available. 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. 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.
Mitas have combined all of their racing experience into the mitas mc50 motorcycle tires noted for its modern sports design and sporty driving characteristics. Dense knob layout provides a large and stable contact patch for improved cornering grip, traction and stability. 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. We are a full service automotive repair and maintenance shop serving the moline area with many years of consistent and friendly service. Contact patch area optimization agility, and new level of response in hard handling. Bridgestone corporation is the worlds largest tire and rubber company. Bridgestone motorcycle tires your journey, our passion. 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.
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. The dark side the love of car tires on motorcycles haul n. Do you ever get balls or lips on the leading or trailing edge of the tread pattern on your motorcycle tires. The tire contact patch, or tire footprint, is the area of the tire that directly connects the vehicle with the driving surface. 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.
The design of the contact patch is an engineering feat that is specific not only to each manufacturer, but for each individual tire. 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. Choose from our selection of tire repair sealants, including preventaflat sealants, tire patch kits, and more. Rear triply carcass, less flexible sidewalls, increased knob strength and a larger contact patch, improves traction in whoops and on squareedged bumps. Tires with a higher profile or aspect ratio that is, the height of the sidewall is fairly large compared to the width of. Further, note that the drawings of the motorcycle tire contact patch show a. 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. Speedo reading tire 1 is assumed accurate tire susp. Jan 25, 2014 the tire contact patch all vehicles are supported by a cushion of air contained in four flexible rubber tires. Wider and flatter tire profile improves contact patch mc clay firmness compound. If you have an existing account with myers tire supply, please contact our customer service team at 8009989897. Its tread pattern ends already before the edge of the tire shoulder to facilitate an optimum contact patch at maximum lean angles.
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. Let your tires cool off remember, tires heat up when you ride and that heat can affect your. Sorry to say this folks, but to very close to 100% accuracy, the size of the contact patch is irrelevant. The contact patch of a tyre is the section of the tyres tread that is in physical contact with the road surface. 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. Mitas mc50 motorcycle tires buy direct from motorace. 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. It feels like you have lost control of the motorcycle as the car tire contact patch leaves the ground on a turn. In addition to tires, bridgestone manufactures diversified products, which include industrial. In addition to tires, bridgestone manufactures diversified products, which include industrial rubber and chemical products as well as sporting goods. Contact patch is the portion of a vehicles tire that is in actual contact with the road surface.
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