Why you need Track Correction for the 70 Series LandCruiser...
The 2007 70 Series update was a significant step forward for the platform - the 1VD-FTV V8 diesel transformed what was already a capable vehicle into something genuinely powerful. But the update introduced a geometric problem that Toyota never addressed from the factory. To fit the wider V8 drivetrain, the front axle and chassis were widened substantially. The rear axle was not. The 70 Series has been sold with this front-to-rear track width mismatch for the entire VDJ production run, and for owners who tow, carry heavy loads, drive sand or soft ground, or have fitted a suspension lift, the handling consequences are real and worth understanding.
Shop the Rear Diff Track Correction Kit
The Problem: Toyota Widened the Front but Not the Rear
When Toyota redesigned the 70 Series front end in 2007 to accommodate the 4.5L V8 engine, the wider engine bay required a significantly wider front axle and chassis. The front track increased by approximately 95mm across all variants - the 76 Series wagon, 78 Series Troopy, and 79 Series ute. The rear axle, however, was carried over largely unchanged from the previous generation. The practical consequence is a vehicle where the front wheels sit approximately 95mm - roughly 50mm per side - wider than the rear.
On paper, a track width difference sounds like an engineering footnote. On the road and off it, the effect is more significant. A vehicle drives most predictably when its front and rear tracks are closely matched, because the rear wheels follow the same path as the front. When the rear track is substantially narrower, the rear axle is effectively trying to drive a different line to the front - it sits inside the path the front has traced. Under light loads on smooth roads this is manageable. Add a tow ball load, a full touring setup, a bull bar, and gear in the tray, and the vehicle's handling becomes noticeably less planted, particularly in conditions that require stability.
What the Track Mismatch Actually Causes
The handling symptoms of the 70 Series track width imbalance show up most clearly in specific conditions, and experienced owners tend to notice them without necessarily knowing the root cause. On sand - particularly when climbing dunes or driving corrugated coastal tracks - the narrow rear track is felt as a tendency to fishtail or feel squirrelly at the rear. The front wheels are breaking a wide path through the sand while the rear wheels are sitting inside that path, which affects traction distribution and makes the rear end less predictable.
Towing is where the mismatch creates the most significant concern. A trailer exerts lateral forces on the tow hitch that the vehicle must resist. A 70 Series with correct front-to-rear track geometry resists those forces with a properly wide rear stance. The narrower rear track reduces the vehicle's resistance to yaw when a trailer begins to sway - the rear end of the tow vehicle has less lateral stability to arrest the motion. For owners towing heavy trailers on highways, this is not a theoretical problem.
The issue is compounded by suspension lifts. A lift raises the centre of gravity and changes the wheel's operating geometry. At standard height the track mismatch is present but partially masked by the vehicle's weight distribution. With 50-100mm of lift added, the combination of higher centre of gravity and narrower rear track makes the instability more pronounced in the same conditions. This is why track correction is consistently recommended alongside any meaningful suspension lift on the 2007+ 70 Series.
On soft ground and in wheel ruts, the narrower rear track creates a situation where the front wheels sit in one rut while the rear wheels sit between ruts, generating additional side loads and unpredictable recovery behaviour. In deeply rutted outback tracks, this is a real-world limitation that manifests as the vehicle requiring more correction inputs than it should.
Why Wheel Spacers Are Not the Answer
The most obvious response to a narrow rear track is to add wheel spacers - bolt a 50mm spacer to each rear hub and the track width is corrected. This approach is popular because it is cheap and appears simple, but it is both illegal above certain dimensions and mechanically problematic regardless of legality.
Under Australian Vehicle Standards Bulletin 14 (VSB14), the track width of a vehicle cannot be changed by wheel spacers or offset rims by more than 25mm on each side. Closing a 50mm per side track deficit with spacers falls outside this limit. Even within the legal 25mm limit, wheel spacers increase the lever arm on the wheel bearing, accelerating wear and introducing potential for bearing failure under the loads that a loaded 70 Series generates. Large spacers - particularly on a vehicle that tows heavy trailers or carries substantial GVM loads - place stress on the hub and bearing assembly that was not part of Toyota's original engineering brief for those components. The result is increased bearing wear and the possibility of hub failure, which is a far more serious outcome than the handling problem the spacer was meant to fix.
Offset wheels address part of the problem within the legal limit, but 25mm per side only partially closes a 50mm per side gap. The physics of the track mismatch remain substantially present, and the approach still places modified loads on the bearing assembly.
The Proper Fix: A Rear Diff Track Correction Kit
A rear diff track correction kit addresses the track width problem at the diff housing level rather than at the wheel end. By correcting the position of the hub relative to the diff centre, the kit moves the rear wheels outward to match the front track width without the bearing load increases associated with wheel spacers. The geometry of the bearing and hub assembly is preserved as Toyota designed it - the wheel is now simply positioned further outboard because the diff housing has been corrected, not because a spacer is adding a lever arm between the hub and the bearing.
Our Rear Diff Track Correction Kit is specifically engineered for the 76 Series wagon and 79 Series single and dual cab from 2007 to 2023, covering the full VDJ production run. It is a bolt-in replacement approach that does not require fabrication or specialist workshop tooling beyond the standard equipment needed for diff work.
The effect on handling is consistently reported as transformative by owners who have done the conversion. The vehicle follows a single track front to rear as it should, towing stability improves substantially, sand and soft ground behaviour becomes more predictable, and the vehicle with a suspension lift handles as a lifted vehicle should rather than as a lifted vehicle with a geometry compromise underneath it. These are not marginal improvements - they reflect the correction of a fundamental design mismatch that has been present in the platform since 2007.
Who Needs a Track Correction Kit?
Track correction is relevant for a significant proportion of the VDJ 70 Series population. The following situations make it a priority rather than an optional upgrade.
Owners who tow regularly - particularly anyone towing caravans, boat trailers, or livestock trailers at or near the vehicle's towing capacity - are operating the 70 Series in the conditions where the rear track narrowness is most safety-relevant. The combination of a heavy trailer on a narrow-rear vehicle at highway speed is where the track mismatch translates from a handling quirk into a stability concern. Track correction substantially improves the vehicle's resistance to trailer sway and the ease with which sway can be arrested once it begins.
Owners who have fitted or are planning a suspension lift should treat track correction as part of the lift package rather than as an afterthought. Lifting a vehicle with an existing geometry deficit amplifies the deficit's effects. A 50mm lift on an uncorrected 70 Series is a reasonable suspension modification for most purposes, but the handling balance of the lifted vehicle is noticeably better with the rear track matched to the front. Many experienced 70 Series workshop operators recommend quoting the two together as a combined job.
Owners who use their vehicle on sand - Fraser Island, the Simpson Desert, the Victorian coastal tracks, the Kimberley - will notice the most immediate improvement in day-to-day driving feel. Sand driving demands predictable rear end behaviour, and the track mismatch works directly against that. Owners who have completed the track correction consistently describe the improvement in sand as substantial and immediately noticeable.
Fitment: 76 and 79 Series, 2007 to 2023
| Model | Year Range | Notes |
|---|---|---|
| 76 Series Wagon | 2007 - 2023 | Full VDJ production run; track mismatch present from introduction of V8 |
| 79 Series Single Cab | 2007 - 2023 | Particularly beneficial for towing and heavy GVM work use |
| 79 Series Dual Cab | 2012 - 2023 | Dual cab with rear passengers and touring loads particularly benefits from correction |
Shop the Rear Diff Track Correction Kit
Frequently Asked Questions
Why does the 2007+ 70 Series LandCruiser have a narrower rear track than the front?
When Toyota redesigned the 70 Series in 2007 to fit the 4.5L V8 engine, the wider engine bay required a wider front axle and chassis. The front track was increased by approximately 95mm to accommodate this. The rear axle was not updated to match, leaving a geometry imbalance that has been present across the entire VDJ production run. It is a factory oversight that Toyota did not address before the 2024 facelift, and it is the reason track correction has become a well-established modification in the Australian 70 Series community.
Will I notice the difference after fitting a track correction kit?
Most owners report an immediately noticeable improvement, particularly in the conditions where the track mismatch is most prominent - towing, sand driving, and off-road use on soft or rutted ground. The vehicle tracks in a straight line more naturally, requires less steering correction on rutted roads, and exhibits markedly better stability when towing. Owners with suspension lifts fitted typically notice the largest improvement, as the lift had been amplifying the existing geometry deficit.
Can I use wheel spacers instead of a diff track correction kit?
No, not for the full correction. Australian VSB14 limits track width changes via wheel spacers or offset rims to 25mm per side - half the 50mm per side correction needed to match the rear track to the front. Even within the legal limit, wheel spacers increase the bearing load arm and accelerate hub bearing wear on a vehicle already under significant load from towing and heavy use. A diff track correction kit corrects the track at the housing level without the bearing load penalty, which is why it is the proper engineered solution.
Is a track correction kit required after a suspension lift?
It is strongly recommended. A suspension lift raises the vehicle's centre of gravity and changes the operating geometry of the suspension. On a 70 Series that already has a rear track deficit, these changes amplify the handling imbalance that the deficit creates. Most experienced 70 Series workshops recommend fitting track correction at the same time as any lift of 50mm or more, and many owners treat the two as a combined package.
Does the track correction kit fit the 78 Series Troopy?
The current listing covers the 76 Series wagon and 79 Series single and dual cab from 2007 to 2023. Check the product page for the most current fitment information, as the range may be updated to include the 78 Series Troopy. The Troopy shares the same rear axle and track mismatch issue as the other VDJ body styles.
Does the 2024 facelift 70 Series have the same track width problem?
The 2024 facelift introduced the new GDJ 4-cylinder engine and a revised front end. Whether Toyota addressed the front-to-rear track width balance in this update should be confirmed against the current facelift specifications before purchasing a correction kit. The track correction kit listed here is specified for 2007 to 2023 VDJ models.
