| AUDI | Model Year | Closest distance between forward towers - (M1) | Distance from uppermost windshield to forwardmost tower foot - (M2) | Closest distance between rear towers - (M3) | Crossbar spread distance center to center - (M4) |
| 80 / 90 Sedan | 88 - 95 | Q6 - 34 1/4" | 6" | Q6 - 33 1/8" | 32" |
| 100 / 200 Sedan | 89 - 91 | Q6 - 36 3/4" | 6" | Q6 - 36 3/8" | 34" |
| 100 / S4 Sedan | 92 - 94 | Q6 - 39 3/4" | 8" | Q6 - 39" | 28" |
| 4000 | 80 - 87 | Q31 - 36 1/8" | 3" | Q31 - 36 3/8" | 36" |
| 5000 Sedan | 79 - 83 | Q24 - 39 1/4" | 4" | Q24 - 38 3/4" | 36" |
| 5000 Sedan | 84 - 88 | Q5 - 37 1/8" | 6" | Q6 - 35 5/8" | 30" |
| A6 Sedan | 95 - 96 | Q6 - 39 3/4" | 8" | Q6 - 39 1/4" | 33" |
| Coupe GT | 82 - 87 | Q24 - 33 3/8" | 6" | Q24 - 32 7/8" | 33" |
