It is worth it to drive the extra 30 miles and take highway 180. You do not need to go as far north as Fesno, you can get off 99 about 15 - 20 miles before reaching Fesno, and save about 40 miles overall driving distance.
There are a lot of switchbacks. I never really cared, or noticed them with my 75 F-350 and camper, but in the 27' class C, it was steep and underpowered. In my 30' Bounder, it was a fun drive, yet that is because I like mountain driving, and can handle a 7% downgrade without overheating the brakes, yes I did have to stop for about 15 minutes, and take in the views, so the brakes would not have overheated.
Yes you can, but no - I would not recommend it to anyone who does not love mountain driving.
Highway 180 has about a 7-10mile downgrade of about 5% to 6%. Remember to lock out overdrive, and slow to about 40, then shift to 2 gear (if you have a 4 speed) to avoid overheating the brakes. When you have more than 6 cars behind you, California law requires that you pull off at a turnout, to allow faster vehicles to pass.
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
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