420/70R28

Optitrac 133D R-1W
420/70R28
Technical data
Design Optitrac
Industry Classification R-1W
Tyre size 420/70R28
LI/SS 133D
FR/DW n/a
PR n/a
TL/TT TL
Tyre Width (mm) 429
Overall diameter (mm) 1347
Static Loaded radius (mm) 609
Rolling circumference (mm) 4069
SRI 650
Weight (kg) 96
Nominal Inflation Pressure (bar) 1.6
Maximum Load (kg) 2060
Tread Depth (mm) 44
Recom 'd Rim Width W13
Other approved rims W12, W14L
Load data
Type load (kg) at various inflation pressures (kPa)
Max Speed (Km/h)
Type load (kg) at various inflation pressures (kPa)
0.6bar 0.8bar 1.4bar 1.6bar 2.0bar 2.2bar 2.4bar 2.8bar 3.0bar 3.2bar
0.6bar 70 1200 1685 1875
0.8bar 65 1120 1320 1850 2060†
1.4bar 50 1385 1945 2165
1.6bar 40 1445 2025 2255
2.0bar 30 1290 1520 2130 2370
2.2bar 10 1680 1980 2775 3090
2.4bar 10cycl 2930 3120 3500

0.6bar

70 km/h n/a
65 km/h 1120 kg
50 km/h n/a
40 km/h n/a
30 km/h 1290 kg
10 km/h 1680 kg
10cycl km/h n/a

0.8bar

70 km/h 1200 kg
65 km/h 1320 kg
50 km/h 1385 kg
40 km/h 1445 kg
30 km/h 1520 kg
10 km/h 1980 kg
10cycl km/h n/a

1.4bar

70 km/h 1685 kg
65 km/h 1850 kg
50 km/h 1945 kg
40 km/h 2025 kg
30 km/h 2130 kg
10 km/h 2775 kg
10cycl km/h 2930 kg

1.6bar

70 km/h 1875 kg
65 km/h 2060† kg
50 km/h 2165 kg
40 km/h 2255 kg
30 km/h 2370 kg
10 km/h 3090 kg
10cycl km/h 3120 kg

2.0bar

70 km/h n/a
65 km/h n/a
50 km/h n/a
40 km/h n/a
30 km/h n/a
10 km/h n/a
10cycl km/h 3500 kg

2.2bar

70 km/h n/a
65 km/h n/a
50 km/h n/a
40 km/h n/a
30 km/h n/a
10 km/h n/a
10cycl km/h n/a

2.4bar

70 km/h n/a
65 km/h n/a
50 km/h n/a
40 km/h n/a
30 km/h n/a
10 km/h n/a
10cycl km/h n/a

2.8bar

70 km/h n/a
65 km/h n/a
50 km/h n/a
40 km/h n/a
30 km/h n/a
10 km/h n/a
10cycl km/h n/a

3.0bar

70 km/h n/a
65 km/h n/a
50 km/h n/a
40 km/h n/a
30 km/h n/a
10 km/h n/a
10cycl km/h n/a

3.2bar

70 km/h n/a
65 km/h n/a
50 km/h n/a
40 km/h n/a
30 km/h n/a
10 km/h n/a
10cycl km/h n/a

† Maximum load at recommended speed and inflation pressure.