Suzuki Jimny SZ5
Discussion
Jader1973 said:
Eh?? The post I quoted doesn’t mention legislation, and neither did I.
The post I quoted was a “nuns and kittens will die” type comment and I was merely pointing out that if the Jimny gives them anxiety then they may not want to visit country Australia.
Oh right, I wonder would they be legal in Australia for a reason, ie to deal with wildlife On highways?The post I quoted was a “nuns and kittens will die” type comment and I was merely pointing out that if the Jimny gives them anxiety then they may not want to visit country Australia.
There is obviously a reason they are illegal in the uk / eu.
Guns are legal in the USA lets all get guns and call anyone who questions illegal guns in the uk nuns.
Stoning is legal in some countries / hanging in India .... Anyone who questions these are nuns too I suppose?
RicksAlfas said:
Such a shame that a thread about an interesting car by an enthusiastic owner has been ruined.
Why not set up a “bull bar” thread in General Gassing and leave this thread for us to hear about life with a Jimny?
There is a certain irony to someone coming into 300bhp/tons own thread and totally taking a dump in it though Why not set up a “bull bar” thread in General Gassing and leave this thread for us to hear about life with a Jimny?
acer12 said:
Oh right, I wonder would they be legal in Australia for a reason, ie to deal with wildlife On highways?
There is obviously a reason they are illegal in the uk / eu.
Guns are legal in the USA lets all get guns and call anyone who questions illegal guns in the uk nuns.
Stoning is legal in some countries / hanging in India .... Anyone who questions these are nuns too I suppose?
Yeah a lot of people use them in Australia because of the likelihood of hitting a kangaroo/wombat/deer, especially at night. Happens all the time and they can easily write a car off.There is obviously a reason they are illegal in the uk / eu.
Guns are legal in the USA lets all get guns and call anyone who questions illegal guns in the uk nuns.
Stoning is legal in some countries / hanging in India .... Anyone who questions these are nuns too I suppose?
So got some road miles on the new tyres.
In terms of comfort and dry road holding, I’d really struggle to know they were any different from the standard Bridgestones. I also don’t think they are any noisier either. Although I can’t be certain on this. I do think there is more noise, but dipping the clutch removes this. So, my current thinking is the new transfer box is slightly louder than the old one.
The 215’s are only marginally taller by the numbers. I was expecting to see the speedo read slightly differently as a result. But according to GPS it appears to be almost identical to with the old tyres.
Not really had any chance to try them in the dirt yet. I did run down a Byway. But it was dry and grippy and didn’t even require 4wd. So more to report in this in due course.
The only real difference is rotating mass. Having lifted the new tyres in and out of the vehicle on the way to the tyre shop. And lifting the old ones back in. The AT’s are a more hefty and heavier tyre. On the vehicle you can feel this in the performance. I’m not saying it is slow now. But certainly slightly less peppy. This has surprised me a bit. And all I can say is, I’m glad I didn’t go for a set of 235’s. They would have been taller and heavier again. So must impact the performance even more so.
In terms of comfort and dry road holding, I’d really struggle to know they were any different from the standard Bridgestones. I also don’t think they are any noisier either. Although I can’t be certain on this. I do think there is more noise, but dipping the clutch removes this. So, my current thinking is the new transfer box is slightly louder than the old one.
The 215’s are only marginally taller by the numbers. I was expecting to see the speedo read slightly differently as a result. But according to GPS it appears to be almost identical to with the old tyres.
Not really had any chance to try them in the dirt yet. I did run down a Byway. But it was dry and grippy and didn’t even require 4wd. So more to report in this in due course.
The only real difference is rotating mass. Having lifted the new tyres in and out of the vehicle on the way to the tyre shop. And lifting the old ones back in. The AT’s are a more hefty and heavier tyre. On the vehicle you can feel this in the performance. I’m not saying it is slow now. But certainly slightly less peppy. This has surprised me a bit. And all I can say is, I’m glad I didn’t go for a set of 235’s. They would have been taller and heavier again. So must impact the performance even more so.
People focus on the impact that changing the unsprung mass has, but rotational inertia is a big deal too. Mass of the wheel/tyre makes a difference to acceleration and how the car feels, and the further out from the centre of rotation the extra mass is the larger the impact so heavier tread on a taller tyre is going to have the biggest possible impact.
Under the new WLTP rules you'll see manufacturers quoting different fuel economy figures for different wheel sizes; a Mazda 3 SkyactivX goes from 51.4mpg on 16" wheels to 48.7mpg on 18" wheels, a 5% drop just from the increased rotational inertia of the wheel and tyre.
Under the new WLTP rules you'll see manufacturers quoting different fuel economy figures for different wheel sizes; a Mazda 3 SkyactivX goes from 51.4mpg on 16" wheels to 48.7mpg on 18" wheels, a 5% drop just from the increased rotational inertia of the wheel and tyre.
300bhp/ton said:
The only real difference is rotating mass. Having lifted the new tyres in and out of the vehicle on the way to the tyre shop. And lifting the old ones back in. The AT’s are a more hefty and heavier tyre. On the vehicle you can feel this in the performance. I’m not saying it is slow now. But certainly slightly less peppy. This has surprised me a bit. And all I can say is, I’m glad I didn’t go for a set of 235’s. They would have been taller and heavier again. So must impact the performance even more so.
I put 888s on Rota's on my MX5 and couldn't believe the difference the added unsprung weight detracted from the performance. I did a Porsche day and the difference between CC brakes and Steel was unreal but on a low powered car, the difference in unsprung mass and rotating force is amplified.stickleback123 said:
People focus on the impact that changing the unsprung mass has, but rotational inertia is a big deal too. Mass of the wheel/tyre makes a difference to acceleration and how the car feels, and the further out from the centre of rotation the extra mass is the larger the impact so heavier tread on a taller tyre is going to have the biggest possible impact.
Under the new WLTP rules you'll see manufacturers quoting different fuel economy figures for different wheel sizes; a Mazda 3 SkyactivX goes from 51.4mpg on 16" wheels to 48.7mpg on 18" wheels, a 5% drop just from the increased rotational inertia of the wheel and tyre.
There’s more to it than just rotational inertia. If the tyres are wider you have an increased frontal area, and the rolling resistance will play a significant role as well Under the new WLTP rules you'll see manufacturers quoting different fuel economy figures for different wheel sizes; a Mazda 3 SkyactivX goes from 51.4mpg on 16" wheels to 48.7mpg on 18" wheels, a 5% drop just from the increased rotational inertia of the wheel and tyre.
stickleback123 said:
Under the new WLTP rules you'll see manufacturers quoting different fuel economy figures for different wheel sizes; a Mazda 3 SkyactivX goes from 51.4mpg on 16" wheels to 48.7mpg on 18" wheels, a 5% drop just from the increased rotational inertia of the wheel and tyre.
I assume WLTP still uses test weight classes, in which case it is possible the car with 18s is in a different class to the car with 16s and therefore goes through a different test program.I’ve been involved in discussions about floor mats being standard fit or not because they were likely to tip the car over to a higher test weight, which would have made tested fuel consumption worse.
Spare wheels are often an option (sometimes at no cost) for the same reason.
Tyres - mudded!
Well, we had some heavy rain here yesterday, so I took the opportunity to try the new Maxxis Wormdrive tyres out.
First to recap:
Dry weather handling seems very good. For the most part they seem no worse on road than the original road biased Bridgestone Duelers. There might be slightly more noise at 60mph+ speeds, but it really is hardly any difference.
No wobble or vibrations either.
General handing is very good. Although when you push on having some fun in the bends, you can feel it moving about on the lugs. Nothing nasty, just a little more, active, shall we say...
Wet roads I'd have to report much the same. There was some standing water and heavy run off yesterday. No hint of aquaplaning and they held the road absolutely fine. Even when adding a bit more vigour with the steering wheel and accelerator pedal.
Really the only downside is the blunted performance. I know the Jimny isn't built for speed, but it always felt zippy and peppy before hand. These new tyres are less than 1/2" taller (11mm by the specs). And only marginally wider at 215 section vs 195s. They do have bigger lugs, so more drag and the weight of them as mentioned previously is quite a bit more than the standard road tyres.
Sadly it feels as though the Jimny is down 10% on power, it is that noticeable. How guys are running 235/75R16's with stock gearing I'm not certain. I have a couple of ideas in the pipework to try and recoup the peppiness of the engine. But that might be for next month.
MPG is down slightly too (by 1mpg), but I expected this. Although to be fair I have been driving it harder (due to feeling slower) and it has done more shorter journeys than normal and more off road use.
So now to the point most will be interested in. How did they do in the mud?
Very very well!
The soil where I was driving is very chalky and gets extremely slick when wet, as well as rather cloggy. That tends not to clear well in almost all mud terrains.
This spot looks a bit tame in this photo. However it is a very good cross axle situation and will, even in the dry stop my competition Land Rover wearing mud terrains if you are going too slowly. The rear passenger wheel is down in a hole, with the drivers rear fully compressed. And the drivers front drooping, with the passenger wheel compressed.
Now the Jimny doesn't flex like my Land Rover does, but not only could I get out (and nearly fell over, it was that slippery here). But thanks to the wonders of 4 wheel traction control, was able to pull aways and drive through the obstacle without needing to rollback or get a run up. I'm pretty sure the stock tyres would not haven enabled this. The Maxxis Wormdrive tyres really worked well with the TCS, giving huge ability.
In this picture you can see how the mud is and how it clings to the tyre:
Testing the suspension flex out.
Despite the mud persisting on sticking to the tyre, you can see the central lugs are still protruding, which is probably why they worked so well. Think they have 12mm or so of tread.
The fronts cleared a little better.
So with mud down the sides, I think I'll be looking at some mud flaps next.
And a few mud traps to keep an eye on and make sure the mud doesn't build up.
Overall I'm pleased with my decision of tyres thus far.
Managed to get out and do my first Green Lane in the Jimny last night.
Nothing too difficult, just a bit of fun really. The lane didn't look like it had been driven in a while, although I could see some recent wheel markings from what was probably a Quad bike.
It was well signed as a By-way however.
A little overgrown in places, but thankfully nothing scratchy or damaging.
Once through the narrower bits, the track opened up into a nice woodland trail.
No real need for 4wd or low range on this kind of terrain. Although low range is nice to manoeuvre easily around the tights bits. And of course, when laning, you are there to enjoy yourself, not race to the other end.
Some rather fantastic views however.
Nothing too difficult, just a bit of fun really. The lane didn't look like it had been driven in a while, although I could see some recent wheel markings from what was probably a Quad bike.
It was well signed as a By-way however.
A little overgrown in places, but thankfully nothing scratchy or damaging.
Once through the narrower bits, the track opened up into a nice woodland trail.
No real need for 4wd or low range on this kind of terrain. Although low range is nice to manoeuvre easily around the tights bits. And of course, when laning, you are there to enjoy yourself, not race to the other end.
Some rather fantastic views however.
Well as most will likely know, it was very hot in the UK yesterday.
Not quite that hot, but in the 30's still.
Yesterday also marked the start of harvest for us on the farm. Such an awesome time of year!!
There were some tremendous rainstorms and thunder about. This one knocked the power out in a local village. But thankfully it missed us completely.
Also had a chance to have a play with my Mavic Mini:
Not quite that hot, but in the 30's still.
Yesterday also marked the start of harvest for us on the farm. Such an awesome time of year!!
There were some tremendous rainstorms and thunder about. This one knocked the power out in a local village. But thankfully it missed us completely.
Also had a chance to have a play with my Mavic Mini:
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