BoostTown.com
Tyre Size Calculator
Find the size of your new tyre based on the original tyre dimension for your car.
Old tyre size
Tyre Width:
355
345
335
325
315
305
295
285
275
265
255
245
235
225
215
205
195
185
175
165
155
145
135
Profile Height:
85
80
75
70
65
60
55
50
45
40
35
30
Wheel Diameter:
23"
22"
21"
20"
19"
18"
17"
16"
15"
14"
13"
12"
10"
Overall Tyre Diameter:
New tyre size
Tyre Width:
355
345
335
325
315
305
295
285
275
265
255
245
235
225
215
205
195
185
175
165
155
145
135
Profile Height:
85
80
75
70
65
60
55
50
45
40
35
30
Wheel Diameter:
23"
22"
21"
20"
19"
18"
17"
16"
15"
14"
13"
12"
10"
Overall Tyre Diameter:
Difference in Diameter:
We recommend ±2.5% as the MAXIMUM difference in diameters