Tuning up standard car to Gr.4 spec and use in daily race

[Doctor X]

As title suggests, can you tune up a standard car to a spec similar to Gr. 4 or Gr. 3 and use in the daily races.

Or are you stuck with the reward cars or those from brand central that are prefixed?

 

[Doctor X]

I assume the lack of response suggests it was a stupid question 😁

 

[Keef]

Well you only waited a couple hours. But yes, you can tune road cars to similar spec to Gr4 cars. It's not as easy as you'd think and the road cars never quite handle as nicely as the Gr4 cars for some reason, but it's possible.

 

[NJ72]

You can, but you won't be able to use them in the daily races as the daily races require the GR.3 or GR.4 markers to be eligible.

As for the performance, the race cars have stats that road cars can't match. They are built to race spec, with greater downforce and - I'm assuming - stiffer chassis, stiffer rollcage, lighter components and so on. The latter is an assumption, but buying a road car, slapping on a splitter and a wing and beefing up the engine won't make it lap as fast as a race car...

 

[m76]

That's why we loved the racing modification feature introduced in GT2, it literally did this. Turned road cars into race cars by a single transaction.

 

[Peter.]

Not being able to tune a road car into being competitive against race cars can be a bit disappointing, but it kinda makes sense. A widebody, diffuser, rear wing and splitter won't give you as much downforce or aero as a car that was designed in a windtunnel for racing (in the case of Gr. 3). Likewise, there's a lot of other refinements to the cars that you'd probably need loads of R&D (and money) just to even conceptualize.

I spent last night trying to turn the Mitsubishi GTO into a Gr.3 level car, and once I compared the suspension and downforce settings to that of the Gr.3 R8, it's obvious it's not going to happen. That car's ride height can go at least another 30mm's lower than my lowest, the suspension is significantly stiffer, and the downforce figures are higher than I could dream of. Most of the additions I can make in GT7 could be done at home in real life or in a local garage, and I can't build a GT car in my garage.

 

[llNovall]

Aside from the Gr4 tag, many road cars are well capable of morphing into a Gr4/GT4 spec car with very similar performance. If all available downforce is outfitted, along with fully adjustable suspension, trans, and diff...and then weight dropped to around the 2800-3300lb weight range, they spec out and handle quite close.
This is my GS/GT4 spec'd Camaro ZL1
3135lbs/475hp for a 6.6lb/hp power to weight ratio.


As a matter of fact, I am organizing a GT4 inspired parity series using a blend of GR4 and Rear wheel driven and tuned road cars. See the link in my signature for series details.

 

[Tenacious D]

Yes it can be done, for offline racing, but you have to be a tuning guru to get the most out of your car to get it close to Gr.4, and have a car that's a mean machine but well mannered already for Gr.3. Gr.3 cars are beasts as NJ72 says, so you need some pixie dust to work some magic on them. Out of the dealer, the AMG Black is your best bet for Gr.3 racing.

This week, I did pretty okay "racing conversions" of a couple of Corvettes, the Ford GT '06, Ferrari F430, Nissan Sivia, 300ZX and a couple of Skylines.

I'd love to participate in some SNAIL racing myself. I'll have to see about that tomorrow.

 

[Rudenut]

That's why we loved the racing modification feature introduced in GT2, it literally did this. Turned road cars into race cars by a single transaction.

I really miss this. All fr and Mr cars should be able to convert to gr4 sins GT4 is very similar to factory versions.

FF cars should be able to become a new TCR style class.

4wd can vary depending on the car i guess.

Not being able to tune a road car into being competitive against race cars can be a bit disappointing, but it kinda makes sense. A widebody, diffuser, rear wing and splitter won't give you as much downforce or aero as a car that was designed in a windtunnel for racing (in the case of Gr. 3). Likewise, there's a lot of other refinements to the cars that you'd probably need loads of R&D (and money) just to even conceptualize.

I spent last night trying to turn the Mitsubishi GTO into a Gr.3 level car, and once I compared the suspension and downforce settings to that of the Gr.3 R8, it's obvious it's not going to happen. That car's ride height can go at least another 30mm's lower than my lowest, the suspension is significantly stiffer, and the downforce figures are higher than I could dream of. Most of the additions I can make in GT3 could be done at home in real life or in a local garage, and I can't build a GT car in my garage.

I agree with you about GT3, but GT4 cars are based on factory models more closely and should be added as a mod for all cars.

 

[llNovall]

Road cars to Gr3/GT3/GTE is a reach. Those are purpose built race car chassis with body shells similar to the road going cars. No way to make the road car behave to that degree. But as mentioned, the Gr4/GT4 Class very simply and likely started its life on the same assembly lines as the road cars...stripped of all the unnecessaries, added safety and data equipment, and have gone racing. One of my favorite classes of racing.

 

[gambleboyen]

That's why we loved the racing modification feature introduced in GT2, it literally did this. Turned road cars into race cars by a single transaction.

To be fair though, as a racing simulation, it should be impossible to take a stock Toyota Camry and turn it into a competitive race car along its purpose built race car Camrys. Even though you could put race car components on the stock Camry, the basis is probably not similar at all, so you would actually have to replace the whole car.

 

[xMAXIx79]

Not being able to tune a road car into being competitive against race cars can be a bit disappointing, but it kinda makes sense. A widebody, diffuser, rear wing and splitter won't give you as much downforce or aero as a car that was designed in a windtunnel for racing (in the case of Gr. 3). Likewise, there's a lot of other refinements to the cars that you'd probably need loads of R&D (and money) just to even conceptualize.

I spent last night trying to turn the Mitsubishi GTO into a Gr.3 level car, and once I compared the suspension and downforce settings to that of the Gr.3 R8, it's obvious it's not going to happen. That car's ride height can go at least another 30mm's lower than my lowest, the suspension is significantly stiffer, and the downforce figures are higher than I could dream of. Most of the additions I can make in GT3 could be done at home in real life or in a local garage, and I can't build a GT car in my garage.

You CANNOT want to tune a GTO road car based on an Audi R8 Gr.3.
These are two completely different vehicles and with a completely different chassis geometry and different components.

For example, what you can try is to test a series M4 with the adjustments of the Gr.4 M4, it will not be 100% the result there either, but at least close to it.

But you can e.g. tune an R34 road car in such a way that it can keep up with a Gr.4 car in a race and sometimes even beat it.

 

[Doctor X]

You can, but you won't be able to use them in the daily races as the daily races require the GR.3 or GR.4 markers to be eligible.

As for the performance, the race cars have stats that road cars can't match. They are built to race spec, with greater downforce and - I'm assuming - stiffer chassis, stiffer rollcage, lighter components and so on. The latter is an assumption, but buying a road car, slapping on a splitter and a wing and beefing up the engine won't make it lap as fast as a race car...

Thanks that's what I thought. Guess I was hoping for a cheaper way to enter the Gr.3 / Gr. 4 races without splashing out £350k/450k.

tbh I am never quite sure how accurate the cars are modelled when comparing the race and road cars and it would be interesting to see what the actual differences would be if you tuned a road car up to race spec.

 

[xMAXIx79]

Gr4 and Gr3 have more Diwnforce and some other Things... And its not Cheaper.

Remember an Gr4 or Gr3 you dont need to buy some Tuningparts. Only Tires maybe... Most Races are BoP so you get an own Setup from the Game.

 

[SnuggleMaster]

You can, but you won't be able to use them in the daily races as the daily races require the GR.3 or GR.4 markers to be eligible.

As for the performance, the race cars have stats that road cars can't match. They are built to race spec, with greater downforce and - I'm assuming - stiffer chassis, stiffer rollcage, lighter components and so on. The latter is an assumption, but buying a road car, slapping on a splitter and a wing and beefing up the engine won't make it lap as fast as a race car...

My Ferrari Tributo begs to differ.

We should be able to upgrade certain cars to GR status. Its done in real life in GT racing ever heard of a privateer?

McLaren was not a race car when it smoked all the real race cars.

I would also like to race some GR cars that aren't 8 years old.

 

[adam46]

My Ferrari Tributo begs to differ.

We should be able to upgrade certain cars to GR status. Its done in real life in GT racing ever heard of a privateer?

McLaren was not a race car when it smoked all the real race cars.

I would also like to race some GR cars that aren't 8 years old.

It hasn’t been done in (major) real-life GT racing in quite a while; customer racing programmes from the manufacturers themselves dominate the market.

The efforts that the most recent (and quite possibly final) privately-built GT3 project from Callaway required a lot more work than we can do on GT7.

Turning road cars into Gr.3s and Gr.4s would be hugely difficult for online racing that depends on the in-game BoP.

 

[Peter.]

You CANNOT want to tune a GTO road car based on an Audi R8 Gr.3.
These are two completely different vehicles and with a completely different chassis geometry and different components.

For example, what you can try is to test a series M4 with the adjustments of the Gr.4 M4, it will not be 100% the result there either, but at least close to it.

But you can e.g. tune an R34 road car in such a way that it can keep up with a Gr.4 car in a race and sometimes even beat it.

I think you misjudged my post. I definitely would not use that as a basis for such a project. Generally in the absence of a tune for a specific car I search for one with similar characteristics and go accordingly.

The point I was making was that, for the most part, you can't tune a road car with the relatively rudimentary modifications the game allows to match that of a real life factory based effort. This is not only realistic, but reflected in game with how much lower and stiffer you can make the suspension on those Gr. 3 cars than you can ever devise on a modified road car, plus the aerodynamic limitations. I imagine it's less of an issue but still tricky to do the same for Gr. 4 cars.

 

[xMAXIx79]

I think you misjudged my post. I definitely would not use that as a basis for such a project. Generally in the absence of a tune for a specific car I search for one with similar characteristics and go accordingly.

The point I was making was that, for the most part, you can't tune a road car with the relatively rudimentary modifications the game allows to match that of a real life factory based effort. This is not only realistic, but reflected in game with how much lower and stiffer you can make the suspension on those Gr. 3 cars than you can ever devise on a modified road car, plus the aerodynamic limitations. I imagine it's less of an issue but still tricky to do the same for Gr. 4 cars.

You are absolut right... sorry that i have missunderstand you.

 

[m76]

To be fair though, as a racing simulation, it should be impossible to take a stock Toyota Camry and turn it into a competitive race car along its purpose built race car Camrys. Even though you could put race car components on the stock Camry, the basis is probably not similar at all, so you would actually have to replace the whole car.

Sorry, but gran turismo was never supposed to be a simulator. We have a bunch of better sims if that's what somebody wants. GT is an arcade racing title, always was. turning it into a full blown simulation would be as tone deaf as trying to make cars as hard to attain in game as in real life.