Road Tire Sizes

Bike Tires: How to Choose
July 27, 2015 – 01:35 pm
ATV Accessories ATV 8 -inch
V-shaped grooves on some improve cornering on rain-soaked roads.

Semi-slick bike tires: These tires are designed with a smooth center, for minimal rolling resistance and faster acceleration, and aggressive treads on the side to help with cornering. They’re used for mostly smooth surfaces with some off-road applications.

Inverted tread tires: Tires designed with an inverted tread have more grip—and rolling resistance—than slicks, but less rolling resistance than knobbies. Use these tires if you suspect you might venture off asphalt or ride on roads with lots of ruts and potholes.

Knobby tires: Different knobby tread styles are designed for specific trail situations.

  • Smaller knobs are faster and suitable for smooth singletrack.
  • Taller knobs offer more grip in technical terrain like roots and rocks.
  • Wider tires with sturdy paddle-like knobs are best for soft trail conditions.
  • Knobs that are wider at the base will corner better on hardpack.
  • Tires with tall, widely spaced knobs offer versatility in loose and hardpacked conditions.
  • Tires designed for mud have widely-spaced knobbies so that mud sheds from the tire. (Otherwise you'll essentially be running slicks when mud gets packed between the knobs.)

Front- or Rear-Wheel Tire Treads

When shopping for mountain-bike tires, look for front- or rear-wheel specific treads.

Front tires are designed for front-end traction when cornering. Rear tires give optimal power transmission and rear wheel control.

Mount them with the tread facing the proper direction. To do so, check the sidewall for an arrow that points in the correct rotation direction.

Road tires are less complicated. Front- and rear-specific treads are often sold as sets. And because road tires grip the irregularities in pavement, you won't see as many tread variations as you will with mountain-bike tires.

Bike Tire Valves

Presta valves are narrower and have built-in valve caps that you loosen to pump up the tire and tighten afterwards. Prestas are more typically seen on higher-end bikes, especially those designed for road riding. Do not use a Presta tube in a Schrader-size hole in your rim, as it will shift too much and possibly sever the valve.

Source: www.rei.com
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Popular Q&A
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What would be a good off roading tire size for a 1995 Jeep Grand Cherokee

The tire size of a 1995 Jeep Grand Cherokee is P225/75R15. !

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What is the best off on road tire size 2657016.

Here are a few brands and models to look at: Toyo Open Country A/T Kumho Venture A/T KL78 These two have the best off road tread and you'll find them at a fair price

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What is the largest off road tire size that will fit on a 2007 Jeep Compass

The Jeep Compass features standard 17-inch wheels and all-season touring tires and available 18-inch wheels and all-season performance tires.

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Fantasy off-road Tire Sizing problem? What's the closest size? | Yahoo Answers

I understand your difficulty. The truth is you need to find a custom tire maker for you which is close to impossible unless you plan to buy a lot of your fantasy wheel.
The closest buy I think is a Dunlop SP Sports Maxx or their Groundtrek WP 3. These have a profile height of 45 and a rim of 20. Any rim size bigger than that is a hard find.
I have not checked but I think they also have tires with a height of 50 for their Grandtrek series. Try looking for ST8000, PT 9000 or SP sport 9000.
I think its worth checking Tirerack.com! try to search for tires then go look at their Dunlop line up.

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