Bologna often ranks as one of the top cities, in terms of quality of life in Italy   Bologna is a very important railway and motorway hub in Italy.  Bologna is renowned for its culinary tradition.ologna often ranks as one of the top cities, in terms of quality of life in Italy   Bologna is a very important railway and motorway hub in Italy.
The differences surprised us! Vehicles equipped with the 2/32 minimum tire tread depth took about 100 more feet to stop and were still traveling at about 45 mph at the same distance the vehicles equipped with the 4/32 deep tires had already come to a complete stop!
Report Abuse. Tread Depth will vary depending on the size and application of the tire in question. Low profile tires may have as little as 5/32 of tread when new. Tires for a tractor (18 wheeler) will have almost a full inch of tread (31/32) on the drive tires. You not only have to look at tread depth, but tread pattern and the compound rating of the rubber used to make the tire. Your best bet to get the information you seek is go to a tire store and pick someone's brain.