Here are the tire sizes for the ST maxx. Looks like a decent tire
<TABLE><TBODY><TR class=alt><TD>LT235/85R16</TD><TD>120 Q</TD><TD></TD><TD>E</TD><TD>BLK</TD><TD>6 - 7.5</TD><TD>6.5</TD><TD>9.5</TD><TD>31.95</TD><TD>7.4</TD><TD>3042</TD><TD>18.5</TD></TR><TR><TD>LT225/75R16</TD><TD>115 Q</TD><TD></TD><TD>E</TD><TD>BLK</TD><TD>6 - 7</TD><TD>6</TD><TD>8.85</TD><TD>29.5</TD><TD>7</TD><TD>2680</TD><TD>18.5</TD></TR><TR class=alt><TD>LT245/75R16</TD><TD>120 Q</TD><TD></TD><TD>E</TD><TD>BLK</TD><TD>6.5 - 8</TD><TD>7</TD><TD>9.7</TD><TD>30.65</TD><TD>7.8</TD><TD>3042</TD><TD>18.5</TD></TR><TR><TD>LT265/75R16</TD><TD>123 Q</TD><TD></TD><TD>E</TD><TD>OWL</TD><TD>7 - 8</TD><TD>7.5</TD><TD>10.5</TD><TD>32</TD><TD>8.45</TD><TD>3415</TD><TD>18.5</TD></TR><TR class=alt><TD>LT285/75R16</TD><TD>126 Q</TD><TD></TD><TD>E</TD><TD>OWL</TD><TD>7.5 - 9</TD><TD>8</TD><TD>11.65</TD><TD>32.9</TD><TD>9.3</TD><TD>3750</TD><TD>18.5</TD></TR><TR><TD>LT265/70R17</TD><TD>121 Q</TD><TD></TD><TD>E</TD><TD>OWL</TD><TD>7 - 8.5</TD><TD>8</TD><TD>10.7</TD><TD>31.85</TD><TD>8.7</TD><TD>3195</TD><TD>18.5</TD></TR><TR class=alt><TD>LT285/70R17</TD><TD>121 Q</TD><TD></TD><TD>E</TD><TD>OWL</TD><TD>7.5 - 9</TD><TD>8.5</TD><TD>11.5</TD><TD>33</TD><TD>9.3</TD><TD>3195</TD><TD>18.5</TD></TR><TR><TD>LT275/70R18</TD><TD>125 Q</TD><TD></TD><TD>E</TD><TD>BLK</TD><TD>7 - 8.5</TD><TD>8</TD><TD>11.05</TD><TD>33.4</TD><TD>9</TD><TD>3640</TD><TD>18.5</TD></TR></TBODY></TABLE>