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2020 Ram 1500 4x4 Suspension Deep Dive

What is taking everyone so long? That’s what I continually ask myself each time yet another all-new full-size pickup comes out with leaf spring rear suspension. Meanwhile, this 2020 Ram 1500 pickup represents a dozen years since coil spring rear suspension debuted when its prior generation was still being called a Dodge Ram 1500. Ford, Chevrolet, Toyota and Nissan introduced full redesigns of their pickups well after Ram proved that coil springs were the way to go, and yet leaf springs persist with the competition. IÂ’m not just popping off, here. In the 1990s I used to specialize in pickup truck suspension tuning for the Toyota Technical Center. Leaf springs are crude and loaded with compromises, but thatÂ’s all that truck design engineers ever gave us to work with. I was instantly all-in on RamÂ’s move to rear coils after the first few miles of driving a 2009 Ram 1500 pickup. Empty-bed ride comfort and handling were on another level, but it could still tow and haul. In fact, towing stability proved to be frankly incredible on the normally-treacherous downhill leg of my winding tow test grade. I fully expected everyone would copy it immediately. But they didnÂ’t. Others may have doubted the payload aspects. Ram never did. It soon doubled down and put coils under the back of its 2014 2500-series trucks. IÂ’ve developed other theories that seek to explain why no one followed their lead, but theyÂ’re not worth dredging up because I think the dominoes will soon begin to fall. Spy photos suggest that the next Toyota Tundra will switch to coils, and there are rumors that the Ford Raptor is going that way. ThatÂ’s not much of a stretch because the Ranger Raptor (only available outside the U.S.) already has coil spring rear suspension. WhatÂ’s the big deal? LetÂ’s take a look at the underside of a 2020 Ram 1500 Laramie 4x4, the second iteration of the Ram 1500 to employ coil spring rear suspension.   As it has for some time, the front end of the Ram 1500 rides on double wishbone suspension. The truck employs a high-mount upper wishbone (yellow arrow) that positions the upper ball joint up behind the tire sidewall instead of inside the wheelÂ’s barrel. This layout offers improved steering geometry and reduced stress in the upper ball joint, the upper control arm and its mounting points.   Coil-over spring/shock assemblies (green) come standard on all 2019+ (fifth-generation) Ram 1500 pickups whether they have four-wheel drive or not.

Fiat Chrysler, Waymo expand partnership for Level 4 self-driving

Fiat Chrysler and Waymo, the self-driving unit of Google parent Alphabet Co., are expanding their partnership in an ambitious plan to develop fully autonomous commercial delivery vehicles and integrate Level 4 autonomous technology across the FCA fleet, the two companies said Wednesday. The agreement makes FCA (soon to be dubbed Stellantis when the PSA merger is complete) the exclusive partner for Waymo to develop and test self-driving Class 1-3 light commercial delivery vehicles. Initial efforts will focus on integrating the Waymo Driver system into the Ram ProMaster cargo van for commercial fleets, including Waymo Via, which have seen demand for home delivery services mushroom during the coronavirus pandemic. Conversely, FCA has tapped Waymo as its exclusive supplier for Level 4 self-driving technology across its vehicle fleet, opening up possibilities for ride-hailing and personal-use vehicles. An FCA spokesman would not commit to any timelines for integrating Waymo’s self-driving technology into the ProMaster or other brands or models. The Society of Automotive Engineers defines Level 4 systems as fully automated driving, though a human driver can manually override and take control of the wheel. There are currently no Level 4 autonomous vehicles offered to customers, and most experts believe the technology still faces many obstacles to broad adoption and regulatory clearance. Fiat Chrysler first partnered with Waymo in 2016. The two companies have worked to test WaymoÂ’s Level 4 technology using retrofitted Chrysler Pacifica Hybrid minivans. “Our now four-year partnership with Waymo continues to break new ground,” Mike Manley, Fiat ChryslerÂ’s CEO, said in a statement. “Incorporating the Waymo Driver, the worldÂ’s leading self-driving technology, into our Pacifica minivans, we became the only partnership actually deploying fully autonomous technology in the real world, on public roads.” Waymo recently introduced its fifth generation of the Waymo Driver system, which it completely redesigned to be able to handle more environments and situations. It combines 360-degree lidar sensors positioned atop the vehicle and at four points around the sides, plus cameras and radars. Waymo said it had already manufactured the new sensors and integrated them onto Jaguar I-Pace test vehicles.

Chrysler recalling 280k Dodge Ram 1500 pickups over axle seizures

Following a June investigation by the National Highway Traffic Safety Administration, Fiat Chrysler Automobiles will be recalling 280,000 Dodge Ram pickups from model year 2005. The issue, NHTSA told The Detroit News, centered on a loose pinion nut, which could cause the rear axle to seize and, potentially, the driveshaft to detach. The affected vehicles were built between January of 2004 and August of 2005, while of the 280,000 trucks, only 257,000 were sold in the US market. According to The News, the recall will begin on February 13, and will see owners report to dealerships to have "a retention feature" added to the pinion nut.