StartYourEngines
Tarmac Traveler
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I thought it would be a good idea to have a specific thread dedicated to the fastest and most furious of all the P1s, i.e. the McLaren P1 LM.
I wanted to do this because I always saw that, somehow, the facts related to this car were never clearly explained and people often tend to confuse this machine with the road-legal convertions of the McLaren P1 GTR, but that's wrong!
The P1 LM comes just in 5 units specifically built by Lanzante on the basis of the P1 chassis.
It seems that the few road legal P1 GTR cars were converted from track-only again by Lanzante, but they were built by McLaren, with Lanzante apparently carrying out just the conversion on the basis of multiple requests by P1 GTR owners.
So, to start with a technical analysis, what are the differences between a P1 LM and a P1 GTR? To make them clear, we will also throw the standard P1 into the mix, as a reference value.
POWERTRAIN
- P1: 3.8 l V8, with 903 bhp (916 PS) and 900 Nm of torque (see official McLaren P1 web reference: Search Used McLaren P1 | Official McLaren Automotive Ultimate Series Dealer)
- P1 GTR (both original track-only and road-legal converted): 3.8 l V8, with 986 bhp (1000 PS) and quoted 1000 Nm of torque
- P1 LM: 4.0 l V8, with 1000 bhp (1014 PS) and quoted 1050 Nm of torque, values both reached with standard 99-octane fuel (see official Lanzante press release here: Watch The McLaren P1 LM’s Record-Setting 6:43 Nurburgring Lap)
AERO AND DOWNFORCE
- P1: 600 kg of downforce at around 257 km/h
- P1 GTR (both track-only and road-legal converted): 10% more downforce than the standard P1, which would lead to 660 kg at around 257 km/h
- P1 LM: 40% more downforce than the P1 GTR, which would lead to 924 kg at 257 km/h
WEIGHT
- P1: the P1 is officially quoted at 1395 kg dry (Search Used McLaren P1 | Official McLaren Automotive Ultimate Series Dealer)
- P1 GTR (both track-only and road-legal converted): it is stated to be 50 kg lighter than the standard P1, putting it at 1345 kg dry and to a quoted 1440 kg kerb
- P1 LM: stated to be 60 kg lighter than the P1 GTR, for a total of 110 kg less than the standard P1, putting it at 1285 kg dry and a quoted 1390 kg kerb (Watch The McLaren P1 LM’s Record-Setting 6:43 Nurburgring Lap)
TYRES
- P1: the standard P1 comes with 245/35/19 fron tyres and 315/30/20 rear tyres
- P1 GTR: the P1 GTR comes with bigger tyres than the standard P1, both at the front (270-section) and at the rear (330-section)
- P1 LM: unsurprisingly, the P1 LM comes with the biggest tyres of them all, fitting 275/30/19 at the front and 335/30/20 at the rear
Now, how to distinguish between a P1 LM and a P1 GTR?
I know that many people are not capable to correctly spot them because I many times found mistakes on the internet, even in articles from official car sites.
Well, besides the color (indeed, the 5 P1 LMs around the world come just or orange or black), the easiest way is to look at their rear wings. In fact, the P1 LM is fitted with a much bigger, higher and larger rear wing compared to ANY P1 GTR in existence.
Look at the following pictures as an example...
P1 GTR:
P1 LM:
The difference between the sizes of the two rear wings is massive, as massive is the difference in downforce, at the end of the day.
So, to conclude: the P1 LM is a totally DIFFERENT BEAST altogether compared to any other P1: we are talking about a road-legal machine which packs more than 1010 PS on less than 1300 kg of dry weight with not far from 1 ton of generated downforce at less than 260 km/h and fat, semi-slick tyres which make those of the standard P1 look like thin bicycle rubber.
As I wanted to put some justice to the name of this beast, I conclude by saying that I personally believe the P1 LM to be the best looking, rarest and most intriguing modern road-legal McLaren ever conceived.
I wanted to do this because I always saw that, somehow, the facts related to this car were never clearly explained and people often tend to confuse this machine with the road-legal convertions of the McLaren P1 GTR, but that's wrong!
The P1 LM comes just in 5 units specifically built by Lanzante on the basis of the P1 chassis.
It seems that the few road legal P1 GTR cars were converted from track-only again by Lanzante, but they were built by McLaren, with Lanzante apparently carrying out just the conversion on the basis of multiple requests by P1 GTR owners.
So, to start with a technical analysis, what are the differences between a P1 LM and a P1 GTR? To make them clear, we will also throw the standard P1 into the mix, as a reference value.
POWERTRAIN
- P1: 3.8 l V8, with 903 bhp (916 PS) and 900 Nm of torque (see official McLaren P1 web reference: Search Used McLaren P1 | Official McLaren Automotive Ultimate Series Dealer)
- P1 GTR (both original track-only and road-legal converted): 3.8 l V8, with 986 bhp (1000 PS) and quoted 1000 Nm of torque
- P1 LM: 4.0 l V8, with 1000 bhp (1014 PS) and quoted 1050 Nm of torque, values both reached with standard 99-octane fuel (see official Lanzante press release here: Watch The McLaren P1 LM’s Record-Setting 6:43 Nurburgring Lap)
AERO AND DOWNFORCE
- P1: 600 kg of downforce at around 257 km/h
- P1 GTR (both track-only and road-legal converted): 10% more downforce than the standard P1, which would lead to 660 kg at around 257 km/h
- P1 LM: 40% more downforce than the P1 GTR, which would lead to 924 kg at 257 km/h
WEIGHT
- P1: the P1 is officially quoted at 1395 kg dry (Search Used McLaren P1 | Official McLaren Automotive Ultimate Series Dealer)
- P1 GTR (both track-only and road-legal converted): it is stated to be 50 kg lighter than the standard P1, putting it at 1345 kg dry and to a quoted 1440 kg kerb
- P1 LM: stated to be 60 kg lighter than the P1 GTR, for a total of 110 kg less than the standard P1, putting it at 1285 kg dry and a quoted 1390 kg kerb (Watch The McLaren P1 LM’s Record-Setting 6:43 Nurburgring Lap)
TYRES
- P1: the standard P1 comes with 245/35/19 fron tyres and 315/30/20 rear tyres
- P1 GTR: the P1 GTR comes with bigger tyres than the standard P1, both at the front (270-section) and at the rear (330-section)
- P1 LM: unsurprisingly, the P1 LM comes with the biggest tyres of them all, fitting 275/30/19 at the front and 335/30/20 at the rear
Now, how to distinguish between a P1 LM and a P1 GTR?
I know that many people are not capable to correctly spot them because I many times found mistakes on the internet, even in articles from official car sites.
Well, besides the color (indeed, the 5 P1 LMs around the world come just or orange or black), the easiest way is to look at their rear wings. In fact, the P1 LM is fitted with a much bigger, higher and larger rear wing compared to ANY P1 GTR in existence.
Look at the following pictures as an example...
P1 GTR:
P1 LM:
The difference between the sizes of the two rear wings is massive, as massive is the difference in downforce, at the end of the day.
So, to conclude: the P1 LM is a totally DIFFERENT BEAST altogether compared to any other P1: we are talking about a road-legal machine which packs more than 1010 PS on less than 1300 kg of dry weight with not far from 1 ton of generated downforce at less than 260 km/h and fat, semi-slick tyres which make those of the standard P1 look like thin bicycle rubber.
As I wanted to put some justice to the name of this beast, I conclude by saying that I personally believe the P1 LM to be the best looking, rarest and most intriguing modern road-legal McLaren ever conceived.
