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Wheels and suspension guide

Junk Mechanics Wheels, Tires and Suspension Guide

Wheels are the part of a flip most players skip and the part of a personal build most players obsess over. This guide covers Tire Zone, choosing rims and tire sizes, the suspension options added at the end of August, and a simple rule for when new wheels are worth the money.

Last checked Sources listed below
Quick answer

For flips, replace rotten rims only when you want maximum value; for builds, set fitment and ride height in the suspension menu

Drive onto a lift at Tire Zone, pull each wheel, and fit OEM or aftermarket rims at a tire station, choosing tire size as you go. A popular money guide treats Tire Zone as optional on flips because it adds only a little value for the time. Since the August 30 update you can also adjust rim spacing (offset) front and rear, ride height, and choose suspension types such as stance or street in the customization menu.

Using Tire Zone

  1. Drive to Tire Zone (the tuning shop is right behind the neighbouring suspension shop, which helps you find it).
  2. Pull onto a free lift. Lifts and tire stations are shared with other players, so you may need to wait.
  3. Remove a wheel and take it to a tire station.
  4. Pick a rim: keep the OEM design or choose an aftermarket rim from the list (creators refer to them by number, such as rim 72).
  5. Choose a tire size and adjust fitment with the slider, then repaint the rim if you want a different colour.
  6. Refit the wheel and repeat for the others, then lower the lift.

If a newly fitted wheel looks wrong in the preview, get back in the car before panicking. In August a creator saw OEM rims display incorrectly until they re-entered the vehicle, after which they looked fine.

Choosing rims and tire sizes

Tire size changes both the look and how much rubber fills the arch. In one build a creator found the default size of 55 too big on a classic supercar and dropped to 40s, while on a pickup truck they went up to 35s with a large aftermarket rim for a lifted look. There is no single right size; match the car.

Rim and tire starting points by car type (from creator builds, not rules)
Car typeTypical choice in buildsWhy
Classic supercarOEM rims, smaller tire sizeKeeps the period look; oversized tires look odd.
Modern muscle carOEM or silver-painted rims, regular tire sizeClean look that suits a flake paint job.
Pickup or SUVLarge aftermarket rim, bigger tire sizeFills the arches for an off-road or lifted stance.
Quick flipLeave as is, or cheap replacement only for rotten rimsTime matters more than looks.

New rims appear with updates, but not every update adds them; a creator noted the October 3 update did not seem to add new wheels.

Suspension, ride height and offset

Before the end of August creators were asking for suspension settings. The August 24 update log mentioned camber and suspension, and by August 30 the customization menu let you set rim spacing (often called offset) separately for front and rear, adjust ride height, and pick a suspension type.

Suspension settings and what they change
SettingWhat it doesTip
Rim spacing / offsetPushes the wheel in or out of the archIncrease it if wheels look sunken into the body.
Ride heightRaises or lowers the carLower for street builds, raise for trucks and off-road looks.
Suspension typeChoices such as stance and streetCreators used stance for low builds and street for SUVs.
CamberTilts the wheels (listed in the August 24 update log)Small amounts look best.

Remodels can break old settings. When a mid-engine supercar was remodelled on September 26, the creator had to redo the offset and raise the ride height because the wheels clipped the fenders. If a car looks wrong after an update, check the suspension menu first.

Are new wheels worth it on a flip?

Both early money walkthroughs agree that paint and repairs matter more than wheels. One creator skips Tire Zone on most flips because it takes time and only adds a little value; another lists rotten rims as something to fix if you want the best price. The practical rule:

  • If the rims are visibly rotten and you are chasing the highest offer, replace them with something cheap.
  • If you are flipping fast, skip Tire Zone and buy the next car sooner.
  • Never spend real effort on fitment and ride height for a car you are about to sell.

The Portable Jack game pass (199 Robux) is meant to let you swap wheels anywhere; when it was reviewed in August wheel removal did not work yet, so check recent videos first. More about passes is in the game pass guide.

Frequently asked questions

Where is Tire Zone in Junk Mechanics?

Tire Zone sits next to the suspension shop, with the tuning shop behind it. Follow the map marker or the tutorial GPS.

Do new rims increase sale price?

A little. Money guides treat new rims as optional on flips; paint and repairs matter more.

How do I change ride height and offset?

Since the August 30 update, use the suspension options in the customization menu to set ride height and front and rear rim spacing.

Why do my wheels clip the fenders after an update?

Car remodels can change how old settings sit. Re-adjust offset and raise ride height slightly.

Does the Portable Jack let me change wheels anywhere?

That is its purpose, but in an August review wheel removal did not work yet. Check recent videos before buying.

Sources and how this page was checked

Wheel and suspension steps come from build videos dated August 17, August 30, September 21 and October 3, 2026, the August 24 update log shown on camera, and two money walkthroughs from early August. Example settings are what one creator chose for one car; they are starting points, not correct values.

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