rims-&-tires-175-198m-1275

( ( \ Service-n! ·of rmation BMW Motorrad GmbH Service kl/mk/fm R25/3 – RJO S Motorcycles Technical ~-iunich, Dec ’75 1/75 (193 M) e Group 35 Subject: Rims and Tires Enclosed please find a list showin~ all rims and tire sizes so far approved for series use as well as the tire makes recommended by the factory for our motorcycle models R25/3 – R9O S. When mount int:: a new tire, a new tube should be used as t:ell. It is recommended to use only tires and tubes of the same make. Important: In case Butyl tubes are used, a rim tape s~ould be attached in addition to the adhesive tape. Due to smaller diffusion losses, the air pressure is -more constant over a longer period in synthetic tubes than in natural rubber tubes, but they are more exposed to wear. If rims are centered or loose spokes tightened the tire ~ust be removed in any case. Adhesive tape and, if applicable, rim tape should be removed thus hlakine it possible to grind down protruding spoke ends. Admissible run-out Rim: Maximum lateral run-out Maximum radial run-out . 2 mm/. 00 7 S in .5 mr.1/.O2 in. Fitted tire: ~aximura lateral run-out naximum rRdial run-out 1.7 mm/.O56 in. )measured 1.5 nm/.059 in. )at the tread center groove i’-ol’ te: When fitting a new front tire it is therefore absolutely necessary to keep the ~inimum distance of 1.5 r:ur./.O59 in between the tire and telescopic fork bracket. -2- S.I. 1/75 (198 M) e – 2 – The following applies to /6 models only At present these motorcycles have only ~ETZELER and CONTINENTAL rims and tires as standard equipment. Repeated inquiries cause us to inform you that up to now no other tire makes meet the requirements with respect to driving safety and load. However, our Development Department in close cooperation with the remaining (foreign) tire manufacturers endeavour to release further makes. We will inform you as soon as positive results are on hand. Sincerely yours, BMWM OTORRADG MBH MUnchen i.V. . i.A. £lad;~~ Ettlich 2 Encls Hohnke ( r ~ ‘ S.I. 1/75 (198 Standard and recommended tires for BMW motorcycles Front tires Rear tires f.lodel ( 1) Size Make (3) Rim Size Make (3) Rim R 25/3 3.25 – 18 Metzeler 3 X 18 3.25 – 18 Metzeler R 26 3 X 18 3.25 – 18 Conti 2.15B X 18 3.25 – 18 Conti 2.15B X 18 R 27 3.25 – 18 2.15B X 18 3.25 – 18 2.15B X 18 n 50 Solo 3.50 – 18 1’1etzeler 2. 1513 X 18 3.50 – 13 Metzeler 2.15 X 18 R 60 Solo 3.50 18 Conti 2.15B X 18 3.50 18 Conti 2.15 X 18 n 69 Solo 3.50 – 18 2.15B X 18 3.50 – 18 2.15 X 18 R 50 w. s. 3.50 – 18 2.15B X 18 4.00 – 18 2.75C X 18 H Go w.s. 3.50 – 18 2.15B X 18 4.00 – 18 2.15c X 18 R 69 w. s. 3. 50 – 18 2.15B X 13 lj. 00 – 18 2.75c X 18 R 50/2 3.50 – 18 2.15B X 18 3.50 – 18 2.15B X 18 R 50 S 3.50 – 18 2 .15B X 18 3.50 – 18 2.15B X 18 R 60/2 3.50 – 18 2.15B X 18 3.50 – 18 2.15B X 18 R 69 s 3. 50 s 18 -2.1513 X 18 3.50 s 18 2.15B X 18 10) R 50/2 w.s. 3.50 – 18 Metzeler Groove)2.15B x 18 4.00 – 18 Metzeler Block C5 2.75C X 18 R 50 S 3.50 – 18 Conti RB Tread 2;15B X 18 lj .00 – 18 Conti Profil K65 2. 75C X 18 R 60/2 3.50 – 18 2.15B X 18 lj .00 – 1e 2.75c X 16 R 69 s 3.50 -: 18 2.158 X 18 1: .00 – 13 2.75c X 18 R 26 Sidecar rim 3.00 X 18 with 3.25 – 18 tires R 27 Sidecar rim 3.00 X 18 with 3.25 – 18 tires R 50 – R 69 s Sidecar rim 2.15Bx 18 with 3.50 – 18 tires ( 1) for R 69 s in solo riding use as s tires s . I. 111 ‘j ( 19 8 r1) _ Standard and recornr;1ended tires for IYH-i motorcycles >1odel I\ jU/5 H ou/j I\ 7 ~/ ‘.J j{ uJ/G H 7jtC H JO/o it 90 S (2) Front tires Size >lake (3) Rim ,. 3. 2’) S 19 f,letzeler Groove 12 1. o5B x 1:J Conti RB Conti Rb 2 Hetzeler cross – country a ‘ 3.25 S 19 !letzeler Groove’·12 1.e5B ·x~1~1 Conti RB Conti RS 2 i-let ze ler cross -country o 3.25 d 1J i·-1etzeler Groove 12 Conti RB Conti R iJ 2 Metzeler cross -country B From Cnassis No. 2 903 756 R 50/5 2 939 207 R 60/5 2 933 280 R 75/5 our/~ moctels are equipped with the wider rear rim Up to the above cnassis numbers the use of 2.156 x improves driving stability. ()) Rear tires Size ~-lal;:e ( 3) 11.00 S 18 ‘.1etzeler Bloclc C G f1etzeler Yll18 Dl.C G ‘,1.etzeler C GG Conti K 111 1-‘.S Conti K 112 ~1e t ze ler Trial l1 .00 S 12 “fotzeler C C/C66 Conti K 111 ::.s Conti h: 112 !1 . 00 I; 1 8 :–~et z e 1 er C 6 IC 5 6 Conti ;,~ 111 KS Conti K 112 !Jletzeler ‘!’rial 2,15B x lo 1d rims is recommended as this Rim 1. 85Li X 18 2.15ll X 13 ri’igh ten spokes so that the rim runs 1.5 mm/.059 o of center to the 1 2.15£: X 1C tighten spol{es so t !1a t t !-le rim runs 1.5 mm/.059 out of center to the left 2.15 X 13 tighten spokes so that the rim runs 1.5 mm/.059 out of center to the left Cross-country tires – Metzeler cross-country B1 Metzeler Trial – for special purpose up to 120 kph /75 mph (not available as “S” or “ii 11 tires). (J f …_ _ ,- 0 CORRELATION BETWEEN TIRES AND STANDARD RIMS /5 /6 /7 /5 /6 /7 Rl00RS Cast Rolling Dia. Front Rear Wheel, Rear On Correct Rim Dimension Rim Size: WM2 WM3 WM4 WM4½ WMS WM6 ~ 1.85 B 2.15 B 2.50 B 2.75 D 3.00 D 3.50 D Installed Width: 4.00 H 18 mm 144 117* 120 122 672 in 4.49 4.61 4.72 4.80 26.45 4.25/85 H 18 nun 114* 118 121 123 660 in 4.49 4.64 4.76 4.84 25.98 130/80 H 18 mm 134 137 c:J 145 669 in 5.27 5.39 5.70 26.34 3.25 H 19 mm CJ 102 666 in 4.01 26.22 * Optimum Size C