Description

Chrysler NS, GS Service Manual: Tires and Wheels – Factory OEM Specifications

Getting tire vibration or uneven wear on a Chrysler NS, GS Service Manual vehicle? Most DIY guides skip the hard data – they’ll tell you to “check pressure” but never give you the factory inflation table or the lead correction chart that tells you exactly which tire to swap. This is the actual OEM document Chrysler dealership techs used. 14 pages, no fluff, no reprints. It covers everything from radial-ply tire care to match mounting procedures that keep your steering wheel straight.

Tire Inflation Pressures and High-Speed Driving Data

Page 3 in this manual lists the exact pressure ranges for normal and high-speed driving. You’ll find the factory-recommended PSI for the NS and GS, along with a note that radial-ply tires handle differently under load. If you’re in San Antonio and running at 75 mph on I-35, those specs matter – overinflating by 5 psi can cause center tread wear in 3,000 miles. The manual also covers how the spare tire (temporary) differs from the full-size setup. Don’t guess; get the number from the source.

Tire Wear Patterns and Lead Correction Chart

One of the most overlooked sections in aftermarket books is the lead correction chart. This manual includes it on page 4. If your NS pulls left at highway speeds, you don’t start swapping parts – you follow the chart: check tire pressure, rotate to specific positions, and re-evaluate. The diagnosis section also explains tread wear indicators and what each pattern (feathering, cupping, edge wear) actually means. A worn inner edge? That’s alignment, not tire balance. The chart tells you when to stop guessing.

Service Procedures: Rotation, Match Mounting, Leak Repair

Three procedures get their own step-by-step coverage: non-directional tire rotation, match mounting the tire to the wheel to minimize runout, and repairing tire leaks. Match mounting is a factory-only procedure – you mark the high spot on the wheel and low spot on the tire, then align them. Aftermarket manuals often skip this because it takes an extra 20 minutes. That 20 minutes saves you a come-back vibration. Also covered: cleaning tires before repair, and the proper way to break the bead without damaging the rim.

Wheel Installation and Runout Correction Methods

Wheels aren’t just bolt-on-and-go. The manual devotes three pages to wheel inspection, tire and wheel runout, and two methods to fix it. Method 1: relocating the wheel on the hub. Method 2: relocating the tire on the wheel. You’ll get the acceptable runout limits (in thousandths of an inch) for both radial and lateral runout. Wheel installation torque values? They’re in the specifications section – but note: this manual covers tires and wheels only, not lug nut torque for every Chrysler model. If you need the specific torque for your NS/GS, check the product page for exact values.

Why OEM Specs Matter Over Aftermarket Guides

Aftermarket manuals often reprint generic tire info that applies to any sedan. This Chrysler NS, GS Service Manual is specific. It includes the vehicle’s tire identification code decoding (like speed rating letters), and tells you what tire chains are approved for this chassis. The spare tire section warns that temporary spares must never be used with chains. You won’t find that in a generic book. The 14 pages are laser-focused on one system: tires and wheels. No engine specs, no transaxle data – just the stuff that keeps your car hooked to the road.

If you’re also diving into electrical or drivetrain work, grab these related factory manuals: Chrysler NS GS Wiring Diagram, Chrysler NS/GS Transaxle and Power Transfer Unit Service Manual – Section: Power, and Chrysler NS, GS 1997 Service Manual – Factory OEM Repair Guide. For background on how radial-ply tires differ from bias-ply, see Manual Transmission (note: that link covers tire construction principles, not transmission – but the principle of understanding factory design applies). Also check Manual Transmission for balance theory.

Does this manual include torque specs for wheel nuts?

No. This 14-page manual covers tires and wheels service procedures, not wheel fastener torque values. You’ll need the separate factory service manual for your specific model year to get lug nut torque.

Is there a procedure for fixing tire vibration that actually works?

Yes. The manual walks through tire noise or vibration diagnosis using the lead correction chart and the two runout correction methods. Start with pressure check (page 3), then inspect tread wear indicators (page 3), then follow the chart to identify which tire is causing the lead. If runout exceeds specs, use Method 1 or 2 to relocate the tire or wheel. That sequence eliminates vibration without blindly rebalancing. It’s the same process Chrysler service bays followed.

Don’t waste time chasing tire problems with generic advice. This is the original OEM documentation that Chrysler technicians used – verified factory specs, correct procedures, no shortcuts. 14 pages, every word from the manufacturer. Access the Factory Manual and keep it on your tablet or print it for the shop. Your NS or GS will thank you the next time you hit 70 mph.