High speed run - Germany
Discussion
BlueEyedBoy said:
I was going to go with Michelin Pilot SP's , not sure if that is the same as above?
I don't know what a Pilot SP is. Pilot Super Sport are OEM fit. They have been superceded by Pilot Sport 4S (which perform better in every head to head test). Pilot Sport 4S are also OEM fit on the new M5.
rayyan171 said:
I'd change the tyres, store the old ones with BMW (they do offer tyre storage, think they maintain the tyres too), and when the time comes to replace the new set put those old ones back on and drive them into the ground.
They might offer to provide storage if the OP goes and drops £2.5k on a set of winters.Can’t see them hanging onto a pair of barely legal worn tyres just for the OP’s convenience though...
Robbidoo said:
I don't know what a Pilot SP is.
Pilot Super Sport are OEM fit. They have been superceded by Pilot Sport 4S (which perform better in every head to head test). Pilot Sport 4S are also OEM fit on the new M5.
I can’t say I’ve noticed any tremendous difference between the two and BMW still don’t seem able to supply the 4S although hopefully that will soon change if they are standard fitment for the F90.Pilot Super Sport are OEM fit. They have been superceded by Pilot Sport 4S (which perform better in every head to head test). Pilot Sport 4S are also OEM fit on the new M5.
I did notice the 4S wears out noticeably quicker than MPSS though!
I actually just put a pair of MPSS on the back of my car last week because the MPS4S fitted were approaching the limit and my brothers were borrowing the car for Le Mans. We went though the same question as to whether they would suffice and decided with the inevitable hooning around it wasn’t worth any extra risk. MPSS were fitted and according to my brother driving, the tractive advantage of new MPSS vs old MPS4S was substantial.
toddygti said:
Just bear in mind that the legal tread depth limit in the EU is 3mm. If you have and/or cause an accident the German Authorities will use this against you and it's unlikely to end well.
I'm there myself in 3 weeks and have just removed my fronts that are at 3mm for new ones. I kept them for use in the UK should i ever need them for track use etc.
Don’t think that tread depths are aligned despite the EU obsession to align every mouse fart. German legal min is 1.6mm not 3mm.I'm there myself in 3 weeks and have just removed my fronts that are at 3mm for new ones. I kept them for use in the UK should i ever need them for track use etc.
How many miles do you normally get out of the rears? Work out from that how much mm you would be expect to be left after 1000 odd miles. How close to 1.8 mm?
Personally I would be changing them and keeping the tyres as others have suggested. Otherwise it would be in the back of my mind and would likely spoil the trip a bit.
Personally I would be changing them and keeping the tyres as others have suggested. Otherwise it would be in the back of my mind and would likely spoil the trip a bit.
CarAbuser said:
Wet weather performance drops off quite sharply as the tread depth lowers.
I would keep the tyres on for the trip. I wouldn't want to be going for a max speed run in anything other than dry weather so they will be just as good as new ones in the dry.
Dry weather performance is likely to be affected by the number of heat cycles on the tyres no?I would keep the tyres on for the trip. I wouldn't want to be going for a max speed run in anything other than dry weather so they will be just as good as new ones in the dry.
Krikkit said:
Despite the fact that it makes sense to unify things like tread depth in Europe...
Agree, in that aspect it’d make sense to be aligned across countries. As to the OP, I’d say either stick to lower speeds or dish out for new tyres. Speeding on the AB is overrated anyway. Oftentimes the road surface is s
te or it’s far too crowded to go beyond 130mph. I would just take it more slowly and continue with the old tyres.I'd be thinking about run-in new tyres.
In my opinion the tread depth at 3mm would be fine BUT what unseen deterioration (from potholes /kerbs etc) has occurred to the tyre during previous use would be a concern for me. I wouldn't fancy a blowout at that sort of speed.
Having said that, and having driven on the German Autobahns, incuding unrestricted sections, I wouldn't be trying out the maximum speed of my cars on a public road, even if it is perfectly legal. Even on the German Autobahns, where I think the general driving standard puts our motorways to shame, I've seen a few numpties pulling out into the path of very fast moving traffic. There comes a time when, whatever you're driving and however quick your reactions, you simply can't wipe off enough speed.
I've also noticed in recent years several incidents of Spanish, Portuguese or more often 'Eastern Block' HGVs pulling put in what appeared to be complete disregard for following traffic. Whether you'll find a long enough clear section of road is debateable.
Of course, it depends what time of day/night you're talking about.
In my opinion the tread depth at 3mm would be fine BUT what unseen deterioration (from potholes /kerbs etc) has occurred to the tyre during previous use would be a concern for me. I wouldn't fancy a blowout at that sort of speed.
Having said that, and having driven on the German Autobahns, incuding unrestricted sections, I wouldn't be trying out the maximum speed of my cars on a public road, even if it is perfectly legal. Even on the German Autobahns, where I think the general driving standard puts our motorways to shame, I've seen a few numpties pulling out into the path of very fast moving traffic. There comes a time when, whatever you're driving and however quick your reactions, you simply can't wipe off enough speed.
I've also noticed in recent years several incidents of Spanish, Portuguese or more often 'Eastern Block' HGVs pulling put in what appeared to be complete disregard for following traffic. Whether you'll find a long enough clear section of road is debateable.
Of course, it depends what time of day/night you're talking about.
theboss said:
rayyan171 said:
I'd change the tyres, store the old ones with BMW (they do offer tyre storage, think they maintain the tyres too), and when the time comes to replace the new set put those old ones back on and drive them into the ground.
They might offer to provide storage if the OP goes and drops £2.5k on a set of winters.Can’t see them hanging onto a pair of barely legal worn tyres just for the OP’s convenience though...
I cracked 200mph on the AB in the RS6 but it took several attempts at 2am-ish before I got a clear enough run with no other traffic because, as much as it's "unlimited", I still didn't feel comfortable going past a car at 100+ on a two lane road.
Before the runs I'd gone through a whole checklist of stuff like pressures, fluid levels, wheel nut check etc but the advantage of a silly amount of power is that getting to 200mph actually took very little time or distance (36 sec and just over 1 mile) which kept things a bit more sensible I suppose
Before the runs I'd gone through a whole checklist of stuff like pressures, fluid levels, wheel nut check etc but the advantage of a silly amount of power is that getting to 200mph actually took very little time or distance (36 sec and just over 1 mile) which kept things a bit more sensible I suppose
Just run them, unless you’re planning on spinning the wheels up they’ll come back looking barely any different.
Only PH keyboard warriors change tyres at 3mm. Everyone I know in the real world changes them when they’re just above the legal limit.
Do keep the pressures correct though and I’m sure the OP is not daft enough to try in anything but bone dry conditions.
Only PH keyboard warriors change tyres at 3mm. Everyone I know in the real world changes them when they’re just above the legal limit.
Do keep the pressures correct though and I’m sure the OP is not daft enough to try in anything but bone dry conditions.
IanH755 said:
I cracked 200mph on the AB in the RS6 but it took several attempts at 2am-ish before I got a clear enough run with no other traffic because, as much as it's "unlimited", I still didn't feel comfortable going past a car at 100+ on a two lane road.
Before the runs I'd gone through a whole checklist of stuff like pressures, fluid levels, wheel nut check etc but the advantage of a silly amount of power is that getting to 200mph actually took very little time or distance (36 sec and just over 1 mile) which kept things a bit more sensible I suppose
Now this post is exactly what Pistonheads is all about. Before the runs I'd gone through a whole checklist of stuff like pressures, fluid levels, wheel nut check etc but the advantage of a silly amount of power is that getting to 200mph actually took very little time or distance (36 sec and just over 1 mile) which kept things a bit more sensible I suppose
At 300kph your tyres will be experiencing ~1300G of acceleration.
At 70mph (112kph) your tyres experience ~160G.
There's definitely a point where a tyre becomes unfit to deal with 300kph while still being perfectly safe for a lot more 70mph service. Do you want to find it? There's only 1mm of wear left in that current set.
Also - you'll gain a tiny bit more top-end by having new tyres on with deep tread...
At 70mph (112kph) your tyres experience ~160G.
There's definitely a point where a tyre becomes unfit to deal with 300kph while still being perfectly safe for a lot more 70mph service. Do you want to find it? There's only 1mm of wear left in that current set.
Also - you'll gain a tiny bit more top-end by having new tyres on with deep tread...
I would check my tyres over for embedded screws, sidewall or tread damage. I would inflate them in a cold condition to the manufacturers recommmended pressure and then I would go and drive in a nice calm, considered, manner flat out on the Autobahn.
If I experienced increased noise or vibration at any point I would slow down gradually and check the car out. It is always a good idea to have well balanced wheels beforehand, as increasing noise/vibration is a clue that an issue is developing. You should be aware that there are also sh!t drivers in Germany, that pull out 1km before overtaking a truck, even though they are only driving 2kmh faster than the truck.
I've driven quickly on the Autobahn for years now, without drama. I would be happy with 3mm tread depth too.
If I experienced increased noise or vibration at any point I would slow down gradually and check the car out. It is always a good idea to have well balanced wheels beforehand, as increasing noise/vibration is a clue that an issue is developing. You should be aware that there are also sh!t drivers in Germany, that pull out 1km before overtaking a truck, even though they are only driving 2kmh faster than the truck.
I've driven quickly on the Autobahn for years now, without drama. I would be happy with 3mm tread depth too.
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