Sustained high speed damaging?

Yeh how does a engine mount and bushes fail driving constantly at 120mph.


Anyway a good motorway blast like that should be good for your car, should reduce the need to terraclean the car ;).
 
So your suspension bushes went from totally fine to ruined in one journey? Yea. Sure.

I did 3000 miles across autobahns last year often at 3 figure speeds in temperatures of up to 40c also in a BMW of similar age without it doing anything at all to the car.
 
Yes. and No. If you sat at 30MPH in 1st gear bouncing off the limiter and sitting at 140 mph bouncing off the limiter, the engine would be under the same amount of load.

As far as I understand it this isn't correct, due to gearing and aerodynamics and the quite ridiculous levels of drag that will be created at 140mph, therefore, ignoring the engine speed, it'll be under a much higher load at 7000rpm in top gear at 140mph than it will be at 7000rpm in 1st gear at whatever speed that translates to - 30-40mph for example.




Someone please correct me if I'm wrong though.
 
As far as I understand it this isn't correct, due to gearing and aerodynamics and the quite ridiculous levels of drag that will be created at 140mph, therefore, ignoring the engine speed, it'll be under a much higher load at 7000rpm in top gear at 140mph than it will be at 7000rpm in 1st gear at whatever speed that translates to - 30-40mph for example.




Someone please correct me if I'm wrong though.

Yep, top speed in 1st gear won't cause the same kind of stress on a car as top speed in 5th / 6th gear.
 
As far as I understand it this isn't correct, due to gearing and aerodynamics and the quite ridiculous levels of drag that will be created at 140mph, therefore, ignoring the engine speed, it'll be under a much higher load at 7000rpm in top gear at 140mph than it will be at 7000rpm in 1st gear at whatever speed that translates to - 30-40mph for example.




Someone please correct me if I'm wrong though.

Yeh the load will be much higher at top speed.
 
Driving at full speed will increase wear a little in the drivetrain components, but the thing that will increase wear the most is high revs on the engine (obviously this is only wear on the engine).

[TW]Fox;25302658 said:
I did 155mph in my car last year and it didn't explode whilst doing it.

m8 wut mcD's carpark wus dis in?





I didn't realise the thread turned into a willy waving thead ;)
 
Of course doing top speed puts massively more wear on the vehicle.

Doing sustained high speeds will affect all parts of the car and oil life is significantly reduced so needs to be changed sooner.

I have no doubt whatsoever that my car could sit at 130mph quite happily all day, but i also have no doubt that the suspension components, the turbos, the oil, the fuel pumps/system, cooling system and tyres would wear out much quicker as a result.
 
I also have no doubt that the suspension components, the turbos, the oil, the fuel pumps/system, cooling system and tyres would wear out much quicker as a result.

Given that high speed will be on the motorway, this will wear suspension components slower than a blast down a country road, same for tyre wear and since the car will be going quicker cooling shouldn't be an issue.

Clearly that's providing all the above are in good condition to start with.
 
Wouldn't have thought sitting at 130mph would be any worse on suspension than any other speed really, unless you were driving over potholes :p
I'd like to imagine any road where you can legally do that sort of speed will be significantly smoother than the majority of roads and put hardly any wear on your suspension.
 
Why?

I've done 148mph in my car and it didn't blow up either.

[TW]Fox;25304860 said:
What's bad about it? It was on a derestricted German autobahn so.completely legal. That's not a bs cover story either - it actually was.

Unless I'm mistaken, I think he is sarcastically mocking how hardcore Fox is for telling us how fast he has been.
 
Given that high speed will be on the motorway, this will wear suspension components slower than a blast down a country road

It may well do, but going for a blast down a country road also wears everything out quicker than regular driving too! The suspension will be working hard at 130mph, no doubt.

same for tyre wear

At 130mph the tyres will get a lot hotter leading to quicker degradation of the rubber. Not only that but there is increased chance of something damaging the tyre and/or blowout. And the valve stem will be under increased strain also.

and since the car will be going quicker cooling shouldn't be an issue.

The amount of heat coming from an engine at 130mph will be significant and everything will be working much harder as a result. When my car goes fast, the oil temp can hit over 120c rather than the 105c or so it normally sits at. God knows how hard the water cooling system is working to get rid of the added heat. Water pumps and associated parts can also fail from the increased load as can various belts.

This is why doing high speeds in a car that a) isn't built for them, b) hasn't been checked thoroughly and c) uses cheap crap parts/tyres is an accident waiting to happen.
 
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