Is there really an advantage to using nitrogen rather than air in car tires, such as better fuel economy, a smoother ride, or longer tire life? Well, sort of. From the top: Air is 78 percent nitrogen and just under 21 percent oxygen, and the rest is water vapor, CO2, and small concentrations of noble gases such as neon and argon. We can ignore the other gases. There are several compelling reason ...

LOAD INDEX: Index figure indicating the maximum load (mass), the tyre can carry under specified conditions. Load Index TLCC* Kg 60 250 61 257 62 265 63 272 64 280 65 290 66 300 67 307 68 315 69 325 70 335 71 345 72 355 73 365 74 375 75 387 76 400 Load Index TLCC* Kg 77 412 78 425 79 437 80 450 81 462 82 475 83 487 84 500 85 515 86 530 87 545 88 560 89 580 90 600 91 ...