Put on new rims with 37" tires, sometimes shakes when stopping

[jaggermouth]

Just wondering if anyone could chime in. The few results I got pointed to warped brake rotors but this issue just happened when I put on the 37's.
If Im driving a normal speed in the city (50-60km) then its fine...but once I hit highway speeds, all is fine until I start braking a bit hard (coming to a stop light going down a hill). The shake is in the steering wheel and the passenger feels his legs bouncing.

Could it be that I need a better steering stabilizer? Rebalanced tires? Different tire pressure (what would you recommend?)

As I said, issue JUST happened after putting large tires on.

[jaggermouth]

Just noticed (since its light out) that the rear axle is leaking oil on to my brake caliper/rotor.
Is this the seal that can be replaced by just removing the 8 bolts and sliding the shaft out?

[joe_r_dog]

Sounds like warped rotors. And on the backs, bad hub seals. U need to remove the axle shaft and hub to replace and need a tool from auto parts store to remove hub spindle nut

[jaggermouth]

Been driving the truck maybe 10km a day since I posted. The shaking doesn't happen anymore (assuming oil coated the rotors when I had the truck on stands).
I will be doing the ball joints and rear seals ASAP though, looking forward to getting that done but will probably do pads and rotors at the same time.

[Karls03]

Support the front axle on a jack stand, put a meter or so long board under the tire about mid tread and lift up, any vertical tire movement indicates worn ball joints. Have someoen watch the ball joints while you lift up on the board, it won't take much pressure to find your answer. Although getting the ball joints out requires a press. If I didn't have access to one, I was going to send my knuckles to a machine shop to have them pressed out/in.

Also, the hub and unit bearing can come off WITH the axle shaft. I saved time doing it that way. Undo the four bolts from the back side, use a puddy knife to start the seperation, put rotor on backwards with 4 loose lugs, and use it as a slide hammer!

[jaggermouth]

What's the best place to get ball joints and seals? Anyone have any experience with fordsuperdutyparts.com? $323 for everything but they don't answer emails.
Local parts store wants around $77 for uppers and $110 for lowers...each...

[Karls03]

Originally Posted by jaggermouth

What's the best place to get ball joints and seals? Anyone have any experience with fordsuperdutyparts.com? $323 for everything but they don't answer emails.
Local parts store wants around $77 for uppers and $110 for lowers...each...

I got the best Moog had to offer from Rock Auto dot com for right at $200. I didn't worry about those axle seals, I haven't seen many Super Duties that have them in the right place.

[jaggermouth]

Not sure if I want to tear everything apart and not do some seals while Im at it. I've done the front end on my e99 so Im aware of the procedure to do the ball joints

[jaggermouth]

Would anyone else suggest leaving the seals? What's the consequence, a possible vacuum leak which will give me ESOF problems?