Posted: 2001-08-06
Symptoms
I will be buying a pair of the Prima V Monsters 20 x 1.75 to replace my 20 x 1.35 tires. Do I need to buy the 1.75 tubes or can I use the existing tubes with the new tires?
Causes
Inner tubes should be only slightly smaller than the tires. Using too small tubes causes the tube to stretch and thus become thin and prone to flats. In your case, I would recommend purchasing the larger tubes for those tires.
Solutions
Please see the tire information table below for more information about the various tires we carry and the inner tubes they deserve.
Additional Info
| BIKE FRIDAY TIRE INFORMATION TABLE | 6-Aug-01 | ||||||||
| rim | TIRE NAME | notes | width | PSI | price | wt (g) | S/V tube | P/V tube | Web Part |
| 451 | IRC Roadlite | 1-1/8″ | 100 | $ 15.00 | 210 | 20 x 1-1/8 | 20 x 1-1/8 | 1001 | |
| 451 | Odyssey Red Racer | 1-1/8″ | 90 | $ 15.00 | 245 | 20 x 1-1/8 | 20 x 1-1/8 | 1601 | |
| 451 | Primo Comet 451 | discontinued | 1-1/8″ | 110 | – | 245 | 20 x 1-1/8 | 20 x 1-1/8 | – |
| 451 | Primo V-Trak | 1-1/8″ | 85 | $ 16.00 | 218 | 20 x 1-1/8 | 20 x 1-1/8 | 1004 | |
| 451 | Bike Friday Sport | discontinued | 1-1/8″ | 110 | – | 235 | 20 x 1-1/8 | 20 x 1-1/8 | – |
| 451 | Primo Comet 451 | 1-3/8″ | 85 | $ 18.00 | 250 | 20 x 1-1/8 | 20 x 1-1/8 | 1002 | |
| 451 | Primo Comet Kevlar | 1-3/8″ | 85 | $ 25.00 | 285 | 20 x 1-1/8 | 20 x 1-1/8 | 1605 | |
| 451 | Ritchey Speedmax hybrid | 1-3/8″ | 65 | $ 16.00 | 290 | 20 x 1-1/8 | 20 x 1-1/8 | 1607 | |
| 406 | Continental Grand Prix | 1.125″ | 120 | $ 35.00 | 198 | 18 x 1-3/8 | 18 x 1-3/8 | 1005 | |
| 406 | IRC Metro | 1.25″ | 100 | $ 17.00 | 270 | 18 x 1-3/8 | 18 x 1-3/8 | 1609 | |
| 406 | Schwalbe City Marathon | 1.25″ | 115 | $ 15.00 | 310 | 18 x 1-3/8 | 18 x 1-3/8 | 5045 | |
| 406 | Schwalbe City Marathon Kevlar | 1.25″ | 115 | $ 23.00 | 340 | 18 x 1-3/8 | 18 x 1-3/8 | 9026 | |
| 406 | Ritchey Speedmax Rov’r | 1.3″ | 100 | $ 20.00 | 268 | 18 x 1-3/8 | 18 x 1-3/8 | 1612 | |
| 406 | Primo Comet 1.35 | 1.35″ | 100 | $ 18.00 | 255 | 18 x 1-3/8 | 18 x 1-3/8 | 1006 | |
| 406 | Primo Comet 1.35 Kevlar | 1.35″ | 100 | $ 25.00 | 283 | 18 x 1-3/8 | 18 x 1-3/8 | 9033 | |
| 406 | Continental Top Touring | discontinued | 1.375″ | 70 | – | 405 | 18 x 1-3/8 | 18 x 1-3/8 | – |
| 406 | Haro Ninja | discontinued | 1.5″ | 65 | – | 360 | 18 x 1-3/8 | 18 x 1-3/8 | – |
| 406 | Shwalbe Marathon Kevlar | 1.5″ | 100 | $ 26.00 | 415 | 18 x 1-3/8 | 18 x 1-3/8 | 1614 | |
| 406 | Avocet Freestyle | 1.75″ | 85 | $ 36.00 | 363 | 20 x 1.5/1.9 | 20 x 1.75 | 1616 | |
| 406 | Maxxis Lug 1.75 | discontinued | 1.75″ | 60 | – | 415 | 20 x 1.5/1.9 | 20 x 1.75 | – |
| 406 | Primo Comet 1.75 | 1.75″ | 100 | $ 18.00 | 335 | 20 x 1.5/1.9 | 20 x 1.75 | 1618 | |
| 406 | Primo Comet 1.75 Kevlar | 1.75″ | 100 | $ 25.00 | 370 | 20 x 1.5/1.9 | 20 x 1.75 | 1620 | |
| 406 | Primo V-Monster | 1.75″ | 40-65 | $ 16.00 | 420 | 20 x 1.5/1.9 | 20 x 1.75 | 1009 | |
| 406 | Primo V-trak | 1.75″ | 40 | $ 16.00 | 400 | 20 x 1.5/1.9 | 20 x 1.75 | 1622 | |
| 406 | Ritchey Megabite 1.75 | discontinued | 1.75″ | ? | – | ? | 20 x 1.5/1.9 | 20 x 1.75 | – |
| 406 | Ritchey Speedmax 1.75 Omega | 1.75″ | 35 | $ 13.95 | 420 | 20 x 1.5/1.9 | 20 x 1.75 | 1624 | |
| 406 | Maxxis Lug 2.0 | discontinued | 2.0″ | ? | – | ? | 20 x 1.5/1.9 | 20 x 1.75 | – |
| 406 | Ritchey Megabite 2.0 | discontinued | 2.0″ | 40 | – | 465 | 20 x 1.5/1.9 | 20 x 1.75 | – |
| 406 | Ritchry Speedmax 2.0 Omega | backordered | 2.0″ | ? | $ 15.00 | 445 | 20 x 1.5/1.9 | 20 x 1.75 | 1626 |
| 406 | IRC MinuteMan 2.10 | 2.1″ | 40-65 | $ 18.00 | 485 | 20 x 1.5/1.9 | 20 x 1.75 | 1628 | |
| 406 | Primo V-track II | 2.1″ | 40 | $ 16.50 | 520 | 20 x 1.5/1.9 | 20 x 1.75 | 1630 | |
| 406 | Ritchey Speedmax 2.1 Alpha | 2.1″ | 40 | $ 16.00 | 470 | 20 x 1.5/1.9 | 20 x 1.75 | 1632 | |
| 349 | Primo Comet 349 | 1-3/8″ | 85 | $ 18.00 | 210 | 16 x 1-3/8 | 16 x 1-3/8 | 5051 | |
| 349 | Primo Comet 349 Kevlar | 1-3/8″ | 85 | $ 25.00 | 215 | 16 x 1-3/8 | 16 x 1-3/8 | 9035 | |
| 349 | Schwalbe City Marathon Kevlar | backordered | 1-3/8″ | 100 | $ 24.00 | 290 | 16 x 1-3/8 | 16 x 1-3/8 | 9024 |
| 203 | Trailer Tire | 1.75″ | 35 | $ 9.50 | 235 | 12.5 x 1.75 | 12.5 x 2-1/4 | 1011 | |
| (C) 2001 Bike Friday; for informational purposes only, no warranty of accuracy implied; subject to change at any time. For more information see www.bikefriday.com or call (800) 777-0258. | |||||||||
