So I did buy some LingLong Ditchfinders
Discussion
xjay1337 said:
They're called ditchfinders because they are crap.
UHP tyre technology has plateaued somewhat. I can't see much more improvement over the next 10 years, maybe no more than 5% in any particular category.
Linglongs for example will never be on the same playing field.
Development/evolution is like that though. You can't see the improvements gained until you look back over time. Your comment could have sounded as pertinent in 1999 but has development not improved in 17/18 years? UHP tyre technology has plateaued somewhat. I can't see much more improvement over the next 10 years, maybe no more than 5% in any particular category.
Linglongs for example will never be on the same playing field.
M-SportMatt said:
If you use your loaf you know that the energy of the car is relative to its speed and its weight,
Ke = 1/2 x mv^2M-SportMatt said:
your braking power is a constant ( assuming discs/pads are in spec and don't over heat)
Ok, let's go with that for the sake of argument.M-SportMatt said:
As the car slows its energy becomes less and the braking force remains constant, therefore its reasonable to assume that retardation increases as the speed drops.
Nope. Force=Mass x Acceleration (or deceleration in this case). If Force and mass are constant then deceleration is constantFastchas said:
Development/evolution is like that though. You can't see the improvements gained until you look back over time. Your comment could have sounded as pertinent in 1999 but has development not improved in 17/18 years?
Well yes, but there comes a point where you can't get any more grip from a tyre without taking it "up a notch" eg to a semi slick.Countdown said:
ope. Force=Mass x Acceleration (or deceleration in this case). If Force and mass are constant then deceleration is constant
http://ijtte.com/uploads/2012-10-01/5ebd8343-9b9c-b1d4IJTTE%20vol2%20no3%20(7).pdfRead page 265 Para 5
As I said, i'd read something recently about the study of deceleration rates and them not being constant
M-SportMatt said:
http://ijtte.com/uploads/2012-10-01/5ebd8343-9b9c-...
Read page 265 Para 5
As I said, i'd read something recently about the study of deceleration rates and them not being constant
Which is fair enough. But that's not what you said in your previous post.Read page 265 Para 5
As I said, i'd read something recently about the study of deceleration rates and them not being constant
Figure 5 shows that deceleration rates increase and then decrease as the car slows.
TooMany2cvs said:
Countdown said:
The Spruce goose said:
The Mad Monk said:
Do you have evidence to demonstrate that?
yes i zoomed in on the video and could clearly see the words. Ditchfinder gtx 2000Countdown said:
Which is fair enough. But that's not what you said in your previous post.
Figure 5 shows that deceleration rates increase and then decrease as the car slows.
Yes i wasn't quite getting it rightFigure 5 shows that deceleration rates increase and then decrease as the car slows.
I think the point to remember is that each 10kmh of retardation will happen in a shorter and shorter distance and vice versa as its quadratic
ie 10m to stop form 50kmh would be 40m to stop from 100kmh
M-SportMatt said:
Countdown said:
Which is fair enough. But that's not what you said in your previous post.
Figure 5 shows that deceleration rates increase and then decrease as the car slows.
Yes i wasn't quite getting it rightFigure 5 shows that deceleration rates increase and then decrease as the car slows.
I think the point to remember is that each 10kmh of retardation will happen in a shorter and shorter distance and vice versa as its quadratic
ie 10m to stop form 50kmh would be 40m to stop from 100kmh
I bought some decent quality mid-range tyres for my decent quality mid-range Merc with its decent quality mid-range performance.
Seems fine so far.
Joking apart, as long as you don't go too cheap, surely buying the right sort of the tyres for the car is more is more important than getting the "best" brand?
For example, would I put Eagle F1s on a Nissan Micra? Of course not! But, by the same token, I wouldn't put "Micra suitable" tyres on a BMW M5.
Seems fine so far.
Joking apart, as long as you don't go too cheap, surely buying the right sort of the tyres for the car is more is more important than getting the "best" brand?
For example, would I put Eagle F1s on a Nissan Micra? Of course not! But, by the same token, I wouldn't put "Micra suitable" tyres on a BMW M5.
Fastchas said:
If your Pirelli's stop in, say 30m and reviews are the best ever, then in 5 years time they improve and stop in 25m but in this time the ditchfinders have improved and stop in 30m, does this mean the ditchfinders are crap?
Relatively yes, and that's what's being discussed. You're also assuming the rate of development in budget tyres is the same as premium, which is clearly not going to be the case as the producers have little incentive to invest in development when cost seems to be the only selling point.As with most discussions on tyres, this thread is just going round in circles
For now, I'll stick to my current pairs of 'Mazzini' and 'Roadstone' tyres, and will let you know when I have an accident for which they can be held at fault. If I'm mortally wounded, I will make contact via Ouija board...
For now, I'll stick to my current pairs of 'Mazzini' and 'Roadstone' tyres, and will let you know when I have an accident for which they can be held at fault. If I'm mortally wounded, I will make contact via Ouija board...
MorganP104 said:
I bought some decent quality mid-range tyres for my decent quality mid-range Merc with its decent quality mid-range performance.
Seems fine so far.
Joking apart, as long as you don't go too cheap, surely buying the right sort of the tyres for the car is more is more important than getting the "best" brand?
For example, would I put Eagle F1s on a Nissan Micra? Of course not! But, by the same token, I wouldn't put "Micra suitable" tyres on a BMW M5.
You are wrong lol. According to most posters on here, your Micra needs Michelin PS4's (nothing less) and the M5 needs semi-slick track tyres.Seems fine so far.
Joking apart, as long as you don't go too cheap, surely buying the right sort of the tyres for the car is more is more important than getting the "best" brand?
For example, would I put Eagle F1s on a Nissan Micra? Of course not! But, by the same token, I wouldn't put "Micra suitable" tyres on a BMW M5.
http://www.tyrereviews.co.uk/Article/2017-Auto-Bil...
They included a "star performer" tyre, which isn't the worst of the budgets by a long way.
12 meters longer wet braking from 62mph compared to the Hankook. That's a fairly big crash.
The dry was 3.6 meters, that's still a hard bump.
They included a "star performer" tyre, which isn't the worst of the budgets by a long way.
12 meters longer wet braking from 62mph compared to the Hankook. That's a fairly big crash.
The dry was 3.6 meters, that's still a hard bump.
For a Micra, if you just go to Kwik Fit, four of the cheapest tyres will cost you about £160. Four GoodYears or Dunlops, about £240. Four Michelins or Continentals, about £280. So £120 between cheapest and most expensive and £80 between cheapest and premium. You could probably split the difference between ditchfinders and the Goodyears/Dunlops and get something Barum/Falken/etc for about £200, thus saving yourself 40 quid on a premium brand tyre. If you rotate them and replace in sets, and assuming that they all last the same distance, what does that work out as per mile or per month? Peanuts, in the grand scheme of things. Even harder to justify cheaping out on tyres that are cheap to begin with, IMO.
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