Motorcycle tire questions.....................…

i'm looking for 2.50 - 18 tires for the front of my project bike and 2.75 - 18 for the rear of my project bike.



come to find out they have changed the way they classify tires since 1969 when the bike was built.. I'm going by what the current tires say on it..





i know nothing about tire sizing, so here are the questions i have.



1. I see on every motorcycle tire site, they give you the option of front tire and back tire. they are specific.. Is there actually a difference? Do rear tires have more tread or something? what would happen if i put two front tires on the bike?



2. i found this classification. metric = 80/90 alpha = MH90 and inch = 2.50/2.75



i'm curious about the alpha.



i found dunlop tires that say "MR90H-18 Front :" is that what i'm looking for???????????



what is MJ or MR or MH or whatever else... ???



3. does anyone know specifically where i can find the tires i need?



they go on a bike exactly like this:



http://www.suzukicycles.org/photos/USA/1…



http://www.suzuki-moto.ru/img/313.jpg



they are little rubber band tires...Motorcycle tire questions.....................…
The old method was in inches, so a 2.50 - 18 tire/rim was 2.5 inches wide at the bead and had a diameter of 18 inches. the profile was rarely mentioned, and were usually pretty tall (70+). So in current metric terms, the width would be (2.50 inches x 25.4 mm/inch) 63.5 mm wide - which is smaller than any modern tire I could find. Most are 80 mm or wider.



The smallest current size is around 3.00 - 18. You can find some here:

http://www.bikebandit.com/product/3596

these should work on your bike, the only issues would be that the tire may be a bit taller than the original , and fender clearance may be a problem.



More info here: http://www.cb450stuff.com/tires/Motorcycle tire questions.....................…
WOW, you got a nice project.

The back tire is usually a little bit bigger than the front.



If my calculation is correct I think the mh90 is gonna be about 3/4 of an inch bigger than what you got if the 90 is metric. I would assume the 2.50/ 2.75 is probably the tire sidewall height in inches and that equals to like 70-75mm.



Try googling vintage motorcycle tires.



Good LuckMotorcycle tire questions.....................…
I wonder if you can contact someone from Suzuki? What did thy say at your motorcycle shop? That bike looks cool I hope you get it going!
Reading Motorcycle Tyre Ratings





Tyre Speed Ratings:



Speed Symbol: Speed (km/h) Speed (mph)

J 100 62

K 110 68

L 120 75

M 130 81

N 140 87

P 150 93

Q 160 99

R 170 106

S 180 112

T 190 118

U 200 124

H 210 130

V 240 149

Z %26gt;240 %26gt;150

W 270 168

Y 300 186



Tyre Load Index:



Load Index: Load in KG:

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

77 412

78 425

70 437

80 450

81 462

82 475

83 487

84 500

85 515

86 530

87 545

88 560

89 580

90 600





Tyre identification numbers provide the following information”



Tyre width (in inches or mm)

The ratio: height / width

The registered maximum speed

The rim diameter

The tyre load



Directional Arrows:



Where a tyre has a directional arrow moulded on it, the tyre must be fitted so that the relevant front or rear arrow follows the direction of rotation. Tyre wear will be affected, or the type itself can be damaged.



Example



200/50 ZR17 M/C (75W) TL

200 = tyre width in mm

/50 = ratio of height to width = 55 : 100

Z = Speed rating (see table above)

R = radial construction

17 = rim diameter in inches

TL =tubeless

(75W) = load index (see table above)

M/C = Motorcycle tyre