MICHELIN TIRE PILOT STREET 2 FRONT/REAR 90/90 - 14 52S REINF TL - EMOTO Supply Co. - Tires - Michelin
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MICHELIN TIRE PILOT STREET 2 FRONT/REAR 90/90-14 52S REINF TL

$69.95
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 with a sidewall height that is 100% of its 90mm width (90mm tall) compared to the 90/90-14's 90% ratio (81mm tall). The 90/100 offers better impact absorption for rough terrain, while the 90/90 provides slightly quicker, more responsive steering for street or flat, hard-packed conditions.
Key Differences
  • Height (Aspect Ratio): The 90/100-14 has a higher profile (taller sidewall) than the 90/90-14. This provides more cushioning over bumps and obstacles.
  • Performance: The 90/90-14 is often preferred for more nimble, precise handling, especially on hard-pack or pavement. The 90/100-14 is often chosen in dirt riding to reduce the chance of flats.
  • Interchangeability: Both fit on 14-inch rims, but switching to a 90/100 may make the front end feel slightly different, often described as heavier, initially.

Dimensions: Both have a 90mm nominal width. The 90/100-14 is roughly 9mm taller than the 90/90-14.

Recommendation: Use 90/90-14 for standard street, pavement, or hard-packed dirt riding. Use 90/100-14 if you need more ground clearance and better bump absorption for rougher terrain.