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Button explains race against "very different" DTM cars

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Button explains race against "very different" DTM cars
By:
Oct 5, 2019, 4:47 PM

Ex-Formula 1 driver Jenson Button has explained the most difficult aspects of his drive to ninth at Hockenheim in the first joint-race between the DTM and SUPER GT.

Preparations for the weekend were made challenging by mixed conditions during two hours of SUPER GT-specific testing on Thursday, while Friday had both wet and dry running.

Qualifying began in the wet and moved into dry conditions as Button took an impressive sixth place on the grid, while in the dry race he drove to ninth after a botched pitstop dropped him to 16th mid-race.

Button is in a unique position in that he is the only SUPER GT driver competing in all sessions - Nissan and Lexus opted to split duties between two drivers - while his Kunimitsu Honda is also the only mid-engined car in the field.

The Honda driver outlined ahead of Friday's running that he would have to come to terms with DTM-specific situations such as standing starts, Indianapolis-style restarts and pitstops that only focused on tyre changes, as opposed to driver switching and refuelling.

An added complication was the DTM's use of DRS and push-to-pass, provisions SUPER GT cars do not have.

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Despite Button losing 17.9s at his pitstop - compared to sub-10s stops for DTM regulars - Button's recovery was boosted by the two WRT Audis clashing and Nico Muller suffering a drive-through penalty for pitlane speeding.

But Button also pulled off overtakes to get into the top 10 - notably coming out on top against Sheldon Van Der Linde when the BMW driver pushed him off-track as they navigated a pack of cars.

Asked to explain the differences between DTM and SUPER GT cars after his experience of racing together, he said: “The way the cars work are very different.

"When they’re not using DRS we have a bit more speed, but it’s not as much as I thought. Braking with us is very strong, we’re very good at braking. But it’s the lateral loads, the traction which we really struggle with.

"These guys [DTM] look like they’re just planting their foot and it’s just really good grip when laterally loaded, whereas for us when we touch the throttle it immediately goes to snap-oversteer, and I think that was some of our problems in the wet as well.

"So that’s a big weakness for us, and it makes it very difficult to get on the power for that long straight down to Turn 6. And the high-speed corners as well.

"They’re able to put the car places we can’t really go because we can’t get there. The car feels a bit lazy, and also I think we’re running it a bit too low. So if we do get there we hit the kerb and we take off."

All of the SUPER GT drivers have stressed that the use of a spec Hankook tyre has proven the steepest learning curve.

Set-up work on SUPER GT machines is largely limited as the focus is on bespoke tyres that suit the car for certain conditions, meaning the SUPER GT teams had to experiment with set-up directions it had never used, while also learning a new circuit.

"We obviously learnt a lot, but in terms of where do we go with the set-up, it’s very difficult because we’ve never been in this window with the car before," said Button.

"In Japan, we have a basic set-up in the car, which has been developed in Japan, [and] simulations and what have you. And we just throw tyres at it.

"We have a different tyre, that one doesn’t work so much, we try a different construction, different compound.

"So basically all of our mechanical work is through the tyre. So coming here is all new. We’re running the tyre in a place we’ve never run it before, so there’s a lot to learn and a lot of information to take into tomorrow."

Several leading figures in the Hockenheim paddock had suggested there was an expectation that SUPER GT machines would be quicker on the straights due to more powerful engines and more advanced aerodynamics.

"Strangely enough, I thought we’d have more straightline speed compared to DTM, but it’s not the case, especially when you’re using DRS," said Button.

The DTM and SUPER GT will review Saturday's performances to decide whether it needs to enforce a Balance of Performance on Sunday.

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Hockenheim DTM: Rast beats Wittmann to win, Button ninth

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Hockenheim DTM: Muller on pole after Rockenfeller penalty

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About this article

Series DTM , Super GT
Event Hockenheim II
Sub-event Race 1
Drivers Jenson Button Shop Now
Author Tom Errington