A place for general chat about the Jimny. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Suppliers/Dealers or anyone selling with a commercial view in mind CANNOT post here unless responding to a specific request of a member in a "wanted" post.
Suppliers include people "breaking for spares" on a regular basis, when purchasing spares members should ask a supplier what they contribute to the running of the forum particularly if contacted by a Private Message
Suppliers or Members who have contributed to the forum can be identifed by the
Jimny can tow 500kg unbraked. So the vehicle is already rated to tow the weight being discussed. If the GVM upgrade simply takes from the towing payload I can’t see it being an issue. Which is likely why the GVM upgrade does not come with different brakes.
Yes, the vehicle is rated to brake GVM +500kg, but there is a difference between a) having to brake GVM, b) having to brake GVM +500kg occasionally, and c) having to brake GVM +500kg, each & every time you need to stop or slow the vehicle.
Which of these three scenarios do you think Suzuki engineered the brakes to cope with?
For me it's a concern, I've learned to have respect for braking systems.
In the UK by law overrun trailer brakes are required to operate at 50% efficiency which means that a Jimny is still going to experience an additional 650kgs worth of force at anything up to 60mph on a dual carriageway. This obviously assumes that the trailer is in a functional condition but as they are not ever inspected unless by a random roadside check or after the fact in the case of a collision it is not unreasonable to expect that Suzuki in line with every other manufacturer applies a factor of safety to the design and specification of the braking system, they have to assume worst case scenario so it's not unreasonable to expect the brakes are capable of retarding the entire train weight, maybe not a dozen times back to back from full speed but certainly once or twice.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
it's not unreasonable to expect the brakes are capable of retarding the entire train weight, maybe not a dozen times back to back from full speed but certainly once or twice.
You seem to be reinforcing the point I made above - that whilst the stock brakes can stop the weight "once or twice", they're not designed to do it repeatedly - that is the essence of the problem, braking transforms the kinetic energy into heat energy, the solid rotors on the Jimny are likely to have trouble dissipating the heat if they are called on to repeatedly stop loads over GVM.
Ventilated discs (and calipers, etc.), from a Vitara, the diesel Jimny, or the five door JB74 are one possible solution.
In a previous response I mentioned warped rotors on a hatch I had in my youth, the fix was swapping in ventilated from the sport model - for some reason Suzuki saw fit to equip the model of Swift I had with solid rotors, but the same model in most markets had ventilated rotors, the judicious selection of off the shelf parts allowed me to significantly improve the brakes on that vehicle.
If you are traveling at 60mph with a full trailer on and have to stop emergency hard it's unlikely that you are then going to immediately accelerate as fast as you can to then do another emergency stop. Doing that multiple times in anything less than test conditions is showing a lack of road awareness. Under normal circumstances the brakes have at least some opportunities for cooling. Mine is an automatic so limited on engine braking and yet I have so far not even come close to cooking the brakes and I live in a region dominated by hills.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
I've always been puzzled by this "automatic so limited on engine braking", I'm a "flatlander", but I have, so to speak, done my time in the hills, and down shifting in an automatic, just as I would in a manual transmission, has always worked for me.
I'm quite sceptical about hill descent control as that uses the ABS system to control the descent speed, until it can't because it's overheated them.
Ventilated disks will cool faster, and that fact that the new five door has them to cope with extra weight (110kg more on the GVM) suggests they're needed.
Wether it is the actual ratios being higher than the manual but with my old manual dropping down the gears the engine would hold the revs and eventually decrease them on its own. With the automatic locking a gear will only hold the revs at best but it's more likely to climb especially if the gradient increases, you can obviously help with the brakes and it saves you have from just riding the brakes to boiling point but the manual is definitely better. That said in every other respect the automatic is far superior both in town and country and off road.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
We use cookies to give you the best online experience. Please let us know if you agree to all of these cookies. Accepting the Cookies also accepts the Disclaimers for the website.
logo.
