Lexus Problems

LBX stands for 'Lexus Breakthrough Crossover', a name attributed to the LBX's subcompact size but luxury credentials.

Apart from the obvious requirement to change to 17-inch wheels as well as your chosen tyre, there are legalities to be considered here, and they can vary from State to Territory, so you need to check with your local authorities before committing to any change like this. However, broadly speaking, you can increase your wheel size by up to two inches, provided you don’t throw your speedometer out in the process. You also need to stay within a certain percentage of the car’s original rolling circumference (the distance the tyre travels in one revolution) to remain legal. And there are the practical issues such as tyre-to-bodywork clearance.

However, on the surface the swap you’ve nominated should be legal and practical. The 2000 Lexus LS400 originally came with a 225 60/16 wheel and tyre, so your preferred option only increases wheel diameter by one inch. Also, by fitting a 55-series tyre, you’ve reduced the sidewall height (from the standard 60-series tyre) so the rolling resistance of your new combination will be less than one per cent larger, so shouldn’t create any legal or clearance hassles. Just be sure to let your insurance company know you’ve made the change. Be sure to check the accuracy of your speedometer after the change, too. A GPS speedo app on your phone is the easiest way to do this.

Big Lexuses, like a lot of high-end luxury cars, have a habit of depreciating quickly, making them great second-hand buys. Like any complex vehicle, of course, there’s plenty to go wrong, although Lexus electronics seem a lot better than a lot of the competition’s.

As for the battery packs, it’s conceivable that a 2008 model LS400h could be getting to the point where it’s battery pack does, indeed, require replacement. But having talked to a few limousine operators who run hybrid Lexus cars, some of them rack up huge distances on the original batteries.

In any case, hybrid cars are now beginning to land in recycling yards faster than their batteries are wearing out, so there’s a relatively good supply of second-hand battery packs if the worst comes to the worst. There’s no hard and fast rule for the lifespan of the batteries in a Lexus, so the best bet is to have the car inspected carefully before committing to the purchase. The money spent on an inspection might be a really, really good investment.

The Lexus GX 550 went on sale in Australia in June, 2024.

The cost of dealership servicing puts a lot of people off, but many see it as the only way to maintain their warranty or, in the longer term, preserve the integrity of the car's service history. In fact, that's not really the case.

Provided the workshop you use is certified to deal with that type of vehicle – and that should be the first question you ask – then your warranty will be safe and the service record will be wholly intact. Just make sure the workshop fills in and/or stamps the relevant page in the car's service handbook.

Although both these cars are similar in many ways, there’s one area where they take difference philosophies. And that’s in the way their hybrid systems are configured and prioritised.

While the Lexus is more of a conventional hybrid with the electric motor doing a lot of the heavy lifting, the Volvo is what’s called a mild hybrid., As the name suggests, that means the electric power is limited to a 10kW boost when taking off or when the driver requires maximum acceleration.

A mild hybrid layout does still operate the stop-start function and can harvest energy when slowing down, so it’s still a worthwhile slice of tech, but it won’t affect fuel consumption as much as the Lexus’ full hybrid system.

Reliability is a bit of an unknown with any new car, but it’s fair to say that the Lexus’ reputation will count for something come trade-in time. Not to mention that, as the more hybrid-focussed of the pair, the Lexus might also be a little more future-proof.