- 11,660
- GTP_Orido
I know you will quote me, and I will have to explain a lot more
First, these old vintages are broken even when stock, they have much lower stock weight than they should have, the Miura, LP400, 365 GTB and Dino are using factory claim weight which was highly inaccurate back in the day. A tested LP400 in the era would hover more than 1300+kg, and can reach closer to 1400kg, while the 365 GTB, this is the worst offender, the real car weight more than 1600kg, even the competizione ( race version has 1400+kg ). GT6 365 is way too light and giving it great advantage against newer cars. Then comes the aero drag, old vintage cars like Miura, LP400, Dino have high cd ( drag ) and they accelerate slower on higher speed, this is not the case in GT6, above 180kmh, the lack of drag can be felt and they goes quicker than they should.
My equation do not fall apart at all
because I knew that all cars in GT6 share same tire model ( CH are the same on all cars for example - apart from width, profile and diameter ). The tires in GT6 are all have high performance similar to modern / current day tires up to RH tires. RM and RS tires are way too much IMO. If you look at Pcars, a game that you always praise each car has tailored tires that are period correct. Meaning a '70 car will have tire properly modeled for it's time. This is not the case in GT6, the 70's car has same tire as the latest supercars, same CH, to RS tire ( although they varies in width and size ). A tire from 70's would have much lower grip than current day tires, imagine if you have a LP400 with brand new design Advan AD08R or Michelin Pilot Cup 2 ( with same tread width as stock tire ) What will happen in Pcars, if one of the race car from 70's has the tire from current race cars era, something that you can do today ? The 787B at recent Goodwood event would have new slick which would be different than when it won Le Mans.I used CH on these old vintages, and although they sill too grippy IMO, it's the closest they can be to get closer to realistic performance. A LP400 and 365 GTB can lap in 1:08 - 1:09s at Tsukuba on CH with attempted correction setup ( weight, distribution ), although they are still much lighter than they should.
I think you would have known this
This is one area that GT6 simplify too much. A crude level system would have work much better if car to car basis tire model is not possible. A decade tire level from 50's - 60's - '70s - 80's - 90's - 00's - 10's would make things interesting, use current tire as base, and lower each decade tire performance by 5-8%.And, the old cars that you refer to, they were driven with comfort tires ? I suspect not, they usually driven with sports tire or racing tires. SH to SS on these cars are already overkill IMO, SH or SM may be able to grip better than 70's slick IMO. I have F40 setup to replicate Taisan JGTC car from early 90's and it only needs SM tire at Suzuka to lap faster than the best lap in it's day. GT6 generic tires really make things messy.
For Ruf YB and BTR, they should be on CM tire if going for realistic grip of the era. Fitting sports tire make these cars quicker but do not guarantee they will be competitive using PP level measurement. IRL, there are many factors that can affect a car performance, drivetrain, power/weight, year it was made, tire, setup etc.
A YB IRL may be very quick in straight line and top speed, but on the circuit like Tsukuba, even back in the 90's, it got slaughtered by F40 and can only pass the R32 GTR on the straight and have to struggle on the turns. The driver was really fighting with the car even when braking for the last turn
, tipsy at the edge of rear grip, then can only flat on throttle at back straight and the start/finish line. The YB in the race had 500+PS.
Last edited:
, while the F40 quickly pass each car like nothing.
. A YB would have been lighter by F40 most of the time. Watch how the F40 pass the YB 
Almost no lift off oversteer here, except for the MR and FR maybe 
