The following chart includes many popular size tires and rims for the Buicks. Stock size tire for the TRs was 26" tall.
15" Tires |
|
|
|
Width |
Profile |
Rim Size |
Diameter |
Rolling Circumference |
% +/- stock |
Approx. Tread Width |
Comments |
185 |
75 |
15 |
25.93 |
81.45 |
-0.30 |
7.28 |
Very close to stock height |
195 |
75 |
15 |
26.52 |
83.30 |
1.97 |
7.68 |
Very close to stock height |
205 |
75 |
15 |
27.11 |
85.16 |
4.24 |
8.07 |
|
215 |
75 |
15 |
27.70 |
87.01 |
6.52 |
8.46 |
|
225 |
75 |
15 |
28.29 |
88.87 |
8.79 |
8.86 |
Good with 28" tall rears |
235 |
75 |
15 |
28.88 |
90.72 |
11.06 |
9.25 |
Good with 28" tall rears |
245 |
75 |
15 |
29.47 |
92.58 |
13.33 |
9.65 |
|
255 |
75 |
15 |
30.06 |
94.43 |
15.60 |
10.04 |
|
265 |
75 |
15 |
30.65 |
96.29 |
17.87 |
10.43 |
|
275 |
75 |
15 |
31.24 |
98.14 |
20.14 |
10.83 |
|
|
|
|
|
|
|
|
|
195 |
65 |
15 |
24.98 |
78.48 |
-3.93 |
7.68 |
|
205 |
65 |
15 |
25.49 |
80.09 |
-1.96 |
8.07 |
|
215 |
65 |
15 |
26.00 |
81.69 |
0.00 |
8.46 |
Stock tire size |
225 |
65 |
15 |
26.52 |
83.30 |
1.97 |
8.86 |
|
235 |
65 |
15 |
27.03 |
84.91 |
3.94 |
9.25 |
|
245 |
65 |
15 |
27.54 |
86.52 |
5.91 |
9.65 |
|
255 |
65 |
15 |
28.05 |
88.13 |
7.88 |
10.04 |
|
265 |
65 |
15 |
28.56 |
89.73 |
9.85 |
10.43 |
|
275 |
65 |
15 |
29.07 |
91.34 |
11.81 |
10.83 |
|
285 |
65 |
15 |
29.59 |
92.95 |
13.78 |
11.22 |
|
|
|
|
|
|
|
|
|
195 |
60 |
15 |
24.21 |
76.07 |
-6.88 |
7.68 |
|
205 |
60 |
15 |
24.69 |
77.55 |
-5.07 |
8.07 |
|
215 |
60 |
15 |
25.16 |
79.03 |
-3.25 |
8.46 |
|
225 |
60 |
15 |
25.63 |
80.52 |
-1.43 |
8.86 |
|
235 |
60 |
15 |
26.10 |
82.00 |
0.38 |
9.25 |
Stock size equivalent |
245 |
60 |
15 |
26.57 |
83.49 |
2.20 |
9.65 |
|
255 |
60 |
15 |
27.05 |
84.97 |
4.02 |
10.04 |
|
265 |
60 |
15 |
27.52 |
86.46 |
5.83 |
10.43 |
|
275 |
60 |
15 |
27.99 |
87.94 |
7.65 |
10.83 |
|
285 |
60 |
15 |
28.46 |
89.42 |
9.47 |
11.22 |
|
295 |
60 |
15 |
28.94 |
90.91 |
11.28 |
11.61 |
|
|
|
|
|
|
|
|
|
195 |
50 |
15 |
22.68 |
71.24 |
-12.79 |
7.68 |
|
205 |
50 |
15 |
23.07 |
72.48 |
-11.28 |
8.07 |
|
215 |
50 |
15 |
23.46 |
73.72 |
-9.76 |
8.46 |
|
225 |
50 |
15 |
23.86 |
74.95 |
-8.25 |
8.86 |
|
235 |
50 |
15 |
24.25 |
76.19 |
-6.73 |
9.25 |
|
245 |
50 |
15 |
24.65 |
77.43 |
-5.22 |
9.65 |
|
255 |
50 |
15 |
25.04 |
78.66 |
-3.70 |
10.04 |
|
265 |
50 |
15 |
25.43 |
79.90 |
-2.19 |
10.43 |
|
275 |
50 |
15 |
25.83 |
81.14 |
-0.68 |
10.83 |
Stock size equivalent |
285 |
50 |
15 |
26.22 |
82.37 |
0.84 |
11.22 |
|
295 |
50 |
15 |
26.61 |
83.61 |
2.35 |
11.61 |
|
|
|
|
|
|
|
|
|
16" Tires |
|
|
|
Width |
Profile |
Rim Size |
Diameter |
Rolling Circumference |
% +/- stock |
Approx. Tread Width |
Comments |
195 |
60 |
16 |
25.21 |
79.21 |
-3.04 |
7.68 |
|
205 |
60 |
16 |
25.69 |
80.69 |
-1.22 |
8.07 |
|
215 |
60 |
16 |
26.16 |
82.18 |
0.60 |
8.46 |
Stock size equivalent |
225 |
60 |
16 |
26.63 |
83.66 |
2.41 |
8.86 |
|
235 |
60 |
16 |
27.10 |
85.14 |
4.23 |
9.25 |
|
245 |
60 |
16 |
27.57 |
86.63 |
6.05 |
9.65 |
|
255 |
60 |
16 |
28.05 |
88.11 |
7.86 |
10.04 |
|
265 |
60 |
16 |
28.52 |
89.60 |
9.68 |
10.43 |
|
275 |
60 |
16 |
28.99 |
91.08 |
11.50 |
10.83 |
|
285 |
60 |
16 |
29.46 |
92.57 |
13.31 |
11.22 |
|
295 |
60 |
16 |
29.94 |
94.05 |
15.13 |
11.61 |
|
|
|
|
|
|
|
|
|
195 |
50 |
16 |
23.68 |
74.38 |
-8.94 |
7.68 |
|
205 |
50 |
16 |
24.07 |
75.62 |
-7.43 |
8.07 |
|
215 |
50 |
16 |
24.46 |
76.86 |
-5.92 |
8.46 |
|
225 |
50 |
16 |
24.86 |
78.09 |
-4.40 |
8.86 |
|
235 |
50 |
16 |
25.25 |
79.33 |
-2.89 |
9.25 |
|
245 |
50 |
16 |
25.65 |
80.57 |
-1.37 |
9.65 |
|
255 |
50 |
16 |
26.04 |
81.81 |
0.14 |
10.04 |
Stock size equivalent |
265 |
50 |
16 |
26.43 |
83.04 |
1.65 |
10.43 |
|
275 |
50 |
16 |
26.83 |
84.28 |
3.17 |
10.83 |
|
285 |
50 |
16 |
27.22 |
85.52 |
4.68 |
11.22 |
|
295 |
50 |
16 |
27.61 |
86.75 |
6.20 |
11.61 |
|
305 |
50 |
16 |
28.01 |
87.99 |
7.71 |
12.01 |
|
315 |
50 |
16 |
28.40 |
89.23 |
9.23 |
12.40 |
|
|
|
|
|
|
|
|
|
195 |
45 |
16 |
22.91 |
71.97 |
-11.90 |
7.68 |
|
205 |
45 |
16 |
23.26 |
73.09 |
-10.53 |
8.07 |
|
215 |
45 |
16 |
23.62 |
74.20 |
-9.17 |
8.46 |
|
225 |
45 |
16 |
23.97 |
75.31 |
-7.81 |
8.86 |
|
235 |
45 |
16 |
24.33 |
76.42 |
-6.45 |
9.25 |
|
245 |
45 |
16 |
24.68 |
77.54 |
-5.08 |
9.65 |
|
255 |
45 |
16 |
25.04 |
78.65 |
-3.72 |
10.04 |
|
265 |
45 |
16 |
25.39 |
79.76 |
-2.36 |
10.43 |
|
275 |
45 |
16 |
25.74 |
80.88 |
-0.99 |
10.83 |
|
285 |
45 |
16 |
26.10 |
81.99 |
0.37 |
11.22 |
Stock size equivalent |
295 |
45 |
16 |
26.45 |
83.10 |
1.73 |
11.61 |
|
305 |
45 |
16 |
26.81 |
84.22 |
3.09 |
12.01 |
|
315 |
45 |
16 |
27.16 |
85.33 |
4.46 |
12.40 |
|
325 |
45 |
16 |
27.52 |
86.44 |
5.82 |
12.80 |
|
345 |
45 |
16 |
28.22 |
88.67 |
8.54 |
13.58 |
|
|
|
|
|
|
|
|
|
17" Tires |
|
|
|
Width |
Profile |
Rim Size |
Diameter |
Rolling Circumference |
% +/- stock |
Approx. Tread Width |
Comments |
195 |
45 |
17 |
23.91 |
75.11 |
-8.05 |
7.68 |
|
205 |
45 |
17 |
24.26 |
76.23 |
-6.69 |
8.07 |
|
215 |
45 |
17 |
24.62 |
77.34 |
-5.32 |
8.46 |
|
225 |
45 |
17 |
24.97 |
78.45 |
-3.96 |
8.86 |
|
235 |
45 |
17 |
25.33 |
79.57 |
-2.60 |
9.25 |
|
245 |
45 |
17 |
25.68 |
80.68 |
-1.24 |
9.65 |
|
255 |
45 |
17 |
26.04 |
81.79 |
0.13 |
10.04 |
|
265 |
45 |
17 |
26.39 |
82.91 |
1.49 |
10.43 |
|
275 |
45 |
17 |
26.74 |
84.02 |
2.85 |
10.83 |
|
285 |
45 |
17 |
27.10 |
85.13 |
4.21 |
11.22 |
|
295 |
45 |
17 |
27.45 |
86.25 |
5.58 |
11.61 |
|
305 |
45 |
17 |
27.81 |
87.36 |
6.94 |
12.01 |
|
315 |
45 |
17 |
28.16 |
88.47 |
8.30 |
12.40 |
|
325 |
45 |
17 |
28.52 |
89.58 |
9.66 |
12.80 |
|
345 |
45 |
17 |
29.22 |
91.81 |
12.39 |
13.58 |
|
|
|
|
|
|
|
|
|
195 |
35 |
17 |
22.37 |
70.29 |
-13.96 |
7.68 |
|
205 |
35 |
17 |
22.65 |
71.16 |
-12.90 |
8.07 |
|
215 |
35 |
17 |
22.93 |
72.02 |
-11.84 |
8.46 |
|
225 |
35 |
17 |
23.20 |
72.89 |
-10.78 |
8.86 |
|
235 |
35 |
17 |
23.48 |
73.75 |
-9.72 |
9.25 |
|
245 |
35 |
17 |
23.75 |
74.62 |
-8.66 |
9.65 |
|
255 |
35 |
17 |
24.03 |
75.48 |
-7.60 |
10.04 |
|
265 |
35 |
17 |
24.30 |
76.35 |
-6.54 |
10.43 |
|
275 |
35 |
17 |
24.58 |
77.22 |
-5.48 |
10.83 |
|
285 |
35 |
17 |
24.85 |
78.08 |
-4.42 |
11.22 |
|
295 |
35 |
17 |
25.13 |
78.95 |
-3.36 |
11.61 |
|
305 |
35 |
17 |
25.41 |
79.81 |
-2.30 |
12.01 |
|
315 |
35 |
17 |
25.68 |
80.68 |
-1.24 |
12.40 |
|
325 |
35 |
17 |
25.96 |
81.55 |
-0.18 |
12.80 |
|
345 |
35 |
17 |
26.51 |
83.28 |
1.94 |
13.58 |
|
355 |
35 |
17 |
26.78 |
84.14 |
3.00 |
13.98 |
|
365 |
35 |
17 |
27.06 |
85.01 |
4.06 |
14.37 |
|
|