Touareg: 2008 V8
Join Date: Jun 2015
Location: Oregon, USA
Second Vehicle: 2007 V6
Thanked 81 Times in 80 Posts
No, your grades are not right. Rise over run so the first example is a rise of 3,000 feet over 11.4 miles, which is (5,280 * 11.4) = 60,192 feet. This then (3,000 / 60,192) * 100 = 4.98%
The second example is pretty steep (I don't know the run here but it feels around three miles). So (999 / (5,280 * 3)) *100 = 6.3%
My VR6 towed our 6K trailer over the hill just north of Lincoln City on 101 and did as fast as I wanted...there are sharp curves on this as it climbs so you can go too fast. This hill goes from around see level to 800 feet in about two miles as best I can tell from Google maps that is ((800 / (5,280 * 2))*100 = 7.58%
As others can now see (and as you already know) the Oregon Coast range isn't the flat lands, it does have some steep grades.
It (the VR6) does just fine with a 6k trailer in tow. Nothing to gloat about, but it gets the job done with zero issues and will work for you...just at a high RPM. The Treg can rev, it just normally doesn't get to be used for what it was designed...towing.