Yokohama ADVAN AD07 vs Yokohama ADVAN AD07 LTS
Discussion
I've just changed the Bridgestone Potenzas on my S2 111s for AD07 LTS. Got them through the Lotus network and they are dated 2014.
They are an improvement in terms of grip and turn-in but the ride seems a bit harsher - is that anyone else's experience? Whereas before the car seemed to float over imperfections at speed, it now seems less compliant. Running standard pressures of 26F / 27.5R.
They are an improvement in terms of grip and turn-in but the ride seems a bit harsher - is that anyone else's experience? Whereas before the car seemed to float over imperfections at speed, it now seems less compliant. Running standard pressures of 26F / 27.5R.
zebedee said:
Isn't the LTS designation down to a more flexible sidewall due to the low kerbweight of the car as opposed to compound changes? So non-LTS ones will give a less-compliant and edgier ride?
Are they still available for the S1 111S?
LTS designation on the AD07's indicates that it's a different compound with a different structure to better suit the intended characteristics of the Elise. By comparison the regular AD07 has a stiffer sidewall.Are they still available for the S1 111S?
It gets really confusing when you realise that there are actually three versions of the AD07 not just two!
AD07 LTS - 'tuned' by Yokohama, tested and approved by Lotus to meet their factory handling requirements. Yes, still being made and yes still available for sale through Lotus Network. NOT available from Pneus any more.
AD07 (OLD compound) - Yokohama standard sports tyre. Stiffer sidewall and possibly harder compound although i haven't validated this by UTQG ratings.
AD07 (NEW compound) - Yokohama standard sports tyre with new compound to meet enviro regulations regarding noise and fuel consumption. This is technically a Lotus approved tyre as it's what is allegedly being put on their new Elise's in order to sell them with tyre's that meet the newer enviro regs.
It's just the 175 front tyres that are the problem here. As soon as you go up to a 195 or 205 using a wider front wheel that you can just run AD08R's all round. It's also worth keeping in mind that the 175 AD07 LTS tyre was chosen and 'tuned' to mildly understeer. Read into that what you will, but in my completely uneducated and semi-scientific mind, softening the sidewall for the LTS model will only increase the slip angle and reduce the 'twitchiness' and steering response speed of the car, effectively softening it again so it's safer or easier for the majority of the public to safely drive the car.
Also interesting is that the fear mongering around using non-LTS or even non-Yokohama tyres seems more prevalent in the UK than in the US (LotusTalk) or Australia (AussieElises).
FWIW, i'm running the 175 AD07 (non-LTS) front and 225 AD08R rear and have enough confidence to push the car to my limits which are well short of its. I may revise this statement once have had the opportunity to test the dynamics of the car at their limit on the track, but IMHO that's what track rubber is for and AD07/08/R's are NOT track rubber.
Ive got a set of brand new AD07 LTS for sale on the seloc website in the classified section. I should really advertise it on here as well.
Just an extra set that i didn't need. But all brand new.
As someone mentioned LTS have a different side wall which are beneficial for Lotus cars both on and off track.
Just an extra set that i didn't need. But all brand new.
As someone mentioned LTS have a different side wall which are beneficial for Lotus cars both on and off track.
cre8toruk said:
Sorry chaps...being thick here... what does "Fronts: 16x7 ET30 & Rears: 17x8 ET20" actually mean in terms of the size AD08R's I should buy ?
8.
No, that's the specs of the wheels themselves. 16x7 means 16 inch diameter and 7 inch wide; 30 is the offset of the hub mating surface from the centre of the wheel in mm; I don't know what "ET" means. 8.
Edited by kambites on Wednesday 29th July 20:07
The Seloc techwiki suggests that those wheels are OK with 205s;
http://wiki.seloc.org/a/S2_Wheel_Options
http://wiki.seloc.org/a/S2_Wheel_Options
Brand new set of Lotus size AD07's here that might be of interest to some on here:
http://www.ebay.co.uk/itm/Yokohama-AD07-Lotus-Sizi...
http://www.ebay.co.uk/itm/Yokohama-AD07-Lotus-Sizi...
Toilet Duck said:
Brand new set of Lotus size AD07's here that might be of interest to some on here:
http://www.ebay.co.uk/itm/Yokohama-AD07-Lotus-Sizi...
At an absolutely comedy price! With a bit of googling, you can get a set at almost half that price ...http://www.ebay.co.uk/itm/Yokohama-AD07-Lotus-Sizi...
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