BHP... how much is too much?

BHP... how much is too much?

Author
Discussion

kambites

67,708 posts

223 months

Sunday 4th August 2013
quotequote all
Most modern cars have pretty good torsional stiffness. I suspect the majority would be happy enough with up to around 200bhp/tonne with no other modifications. If you were to drive them hard, I suspect the first thing to suffer would usually be the brakes.

McWigglebum4th

32,414 posts

206 months

Sunday 4th August 2013
quotequote all
leafspring said:
Never mind... the original question didn't translate well from thought to paper and nobody is going to take it seriously now
Once the willy wavers get bored you might get a sensible answer.

I think about 150bhp is more then enough as more then that and you need bigger tyres, bigger brakes, stiffer suspension etc and so on to take any benefit.

All of which adds lard.

Also it uses more fuel and needs more cooling.

It's going shopping it's not a race

Rawwr

22,722 posts

236 months

Sunday 4th August 2013
quotequote all
Contigo said:
I would be hard pushed to drive a car that didn't have alot of power and bhp.
You want power and BHP? I think you're asking too much.

MC Bodge

21,913 posts

177 months

Sunday 4th August 2013
quotequote all
Rawwr said:
Contigo said:
I would be hard pushed to drive a car that didn't have alot of power and bhp.
You want power and BHP? I think you're asking too much.
Well, I also need a lot of torx:



Which most modern cars will provide

Brett748

920 posts

168 months

Sunday 4th August 2013
quotequote all
Depends on what you use your car for. I was using my Clio 182 for 95% of the time commuting and sitting on the motorway travelling for work. I replaced it with a new Ibiza FR TDI with 105 bhp and for 95% of the time I never miss the extra power as the roads dictate that you can't even use all of the puny 105 bhp in the Ibiza.

However using man logic, at the end of my lease I will replace it with something with about 300 bhp as I will be able to afford it then. It will make the other 5% much more interesting!

GVK

810 posts

244 months

Sunday 4th August 2013
quotequote all
kambites said:
I think 300bhp/tonne is a total bell-end.
EFA!!

Haggleburyfinius

6,613 posts

188 months

Sunday 4th August 2013
quotequote all
McWigglebum4th said:
I really do think anything below 1000Bhp is dangerously slow


And look my willy is bigger then yours

Look at my goatee


Aren't i powerfully built


fk this is getting tedious now
I'd swear your profanity and grumpiness levels have increased since the name change biggrin

littleredrooster

5,557 posts

198 months

Sunday 4th August 2013
quotequote all
I've ridden many bikes with close to 1000bhp/tonne and that - quite honestly - is too much for me. It's very easy to lose track of reality when the throttle is wide open! My current bike is about 600bhp/tonne and that is about adequate.

All cars seem slow in comparison, but it's all relative; the current car is actually quite a quick point-to-point device since its remap (~250bhp, or 140bhp/tonne), but like most cars, the lower-speed point-and-squirt performance is handicapped by the weight.

So - to answer the OP - an average car with about 200bhp is about the minimum to be 'fun', upper limit only defined by running costs which one can afford.

vrooom

3,763 posts

269 months

Sunday 4th August 2013
quotequote all
...when the car wheelspins from one corner to others.

MrB1obby

771 posts

152 months

Sunday 4th August 2013
quotequote all
MC Bodge said:
For me, this is too much:



....if I'm not feeling on top form

Edited by MC Bodge on Sunday 4th August 21:14
That as a starter motor for my engine would be about right for day to day use I suppose.

Buff Mchugelarge

3,316 posts

152 months

Sunday 4th August 2013
quotequote all

Today a 'hot hatch' has to be driveable in traffic, has to carry shopping and babies, has to be comfortable, quiet, reliable and well specced, as well as having enough BHP to keep the local pub bore happy.
The days of the 205 GTi, 106 Rallye etc are long gone I think frown

JDMDrifter

4,042 posts

167 months

Sunday 4th August 2013
quotequote all
100-150bhp per tonne is adequate I'd say. I think anything more than 400 isn't really usable on a daily basis.

vinnie83

3,367 posts

195 months

Monday 5th August 2013
quotequote all
JDMDrifter said:
100-150bhp per tonne is adequate I'd say. I think anything more than 400 isn't really usable on a daily basis.
That really depends on how it's executed.

My old E55 AMG was a far nicer daily drive than my current 320d.

My 911 turbo is a nicer drive than my old 123d with 18" wheels on runflats and M-sport suspension was.

I do feel that my current 320d is a great balance of power and efficiency. For the weight, I rarely find myself wishing I had more on my daily drive.

I wouldn't say I need any more (or I would have remapped it) than this offers daily, but I certainly wouldn't say that power itself makes a car unusable, but by definition many powerful cars are sportier in nature and maybe less comfortable as a concept.

Superhoop

4,682 posts

195 months

Monday 5th August 2013
quotequote all
As per a bit further up there ^^^^ and being a) on PH and b) having been on the receiving end of too much of his drivel - 300bhp/tonne is DEFINITELY too much

As for cars - there are very few occasions where there is too much power - a throttle isn't an on/off switch

jamieduff1981

8,030 posts

142 months

Monday 5th August 2013
quotequote all
I'll go with 100-150bhp/tonne for the daily transport. 150bhp in a 2 tonne car is just a bit slow and tedious for an impatient git like me. I don't drive like a knob (I don't think) but I do like a little bit in reserve, and to be able to pull away smartly if needbe. I avoid FWD cars because I just can't drive them, thus torque steer and similar undesireable characteristics don't exist in the sorts of cars I'd be looking at.

I'd happily have more power in the daily driver though. I wouldn't need it, but would not object to having it.

bennyboysvuk

3,491 posts

250 months

Monday 5th August 2013
quotequote all
leafspring said:
Not in super/sport/race/hyper cars, I mean in your bog standard everyday hatch/estate/saloon/MPV type car.

How much power do you actually need day to day?.. I reckon 150bhp should be enough in a 2 ton car (75bhp per ton)

I'm thinking here of why they make cars that can't handle it... like the Vectra VXR
75bhp per ton? That's a really small amount of power. Even a 1.6 Mitsubishi Charisma has 85 bhp per ton so your example must be one of the slowest cars out there.

My E30 325i Touring was a nice relaxed cruiser and had around 140 bhp per ton. Anything less than that and it feels like hard work on the motorway. E.g. My shed 1.8 Zetec Mondeo with 85 bhp per ton couldn't stick to an indicated 80mph (GPS 70) up steep hills on the motorway, which was very tiresome. Of course, this was down to the lack of torque in the Mondeo, so perhaps bhp per ton isn't the right yardstick here.

However, to answer the question:

Diesel - 130 bhp per ton
Petrol - 140 bhp per ton


Mastodon2

13,846 posts

167 months

Monday 5th August 2013
quotequote all
Brett748 said:
95% of the time I never miss the extra power as the roads dictate that you can't even use all of the puny 105 bhp in the Ibiza.
I would hate to have to drive whatever roads you must be on.

skyrover

12,682 posts

206 months

Monday 5th August 2013
quotequote all
personally.... I believe 100bhp/ton should be a minimum on all future cars sold

B5NXJ

1,091 posts

216 months

Monday 5th August 2013
quotequote all
skyrover said:
personally.... I believe 100bhp/ton should be a minimum on all future cars sold
Sounds like a good number to me.

HonestIago

1,719 posts

188 months

Monday 5th August 2013
quotequote all
100bhp/ton for "normal" A to B cars to make decent progress when required

150bhp/ton to be interesting IMO. My point of reference being my Clio Trophy (which is maybe slightly more powerful than this) which is fun but not THAT quick.

180-190bhp/ton in my Impreza feels a lot nearer the mark although I suspect I'd want well over 200bhp/ton for a car to feel properly quick. Nearer 300bhp/ton would seem biblically fast I imagine!



Edited by HonestIago on Monday 5th August 08:17