As a general rule of thumb, it's safe to fit a tire up to 20 millimeters wider than stock on the original rim. The actual width of the tire will vary depending on the width of the rim: The tire will expand 5 millimeters for every half inch (12.5 millimeters) increase in rim width.
Will 33 inch tires fit on 16-inch rims?
33-inch tires work well with rims that measure 15 or 16 inches in width, while 35-inch tires should only be used with rims that are at least 17-inches wide.
Unit: Imperial Imperial Metric
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Rim Diameter 16.00 in
Rim Width Range 8.00 in - 10.00 in
Overall Diameter 34.60 in
Sidewall Height 9.30 in