2.5 Roadster / Roadster Sport Tire Thread

[suxxer]

Lets sum up all the 2.5 (2010+) tire infos we can find.

2010 2.5 Roadster / Roadster Sport

Stock Rim Size
Front 6J x 16
Rear 7.5J x 17


Stock Non-Sport

• Yokohama Neova AD07 LTS - Directional
  
  Front 175/55/R16
  Rear 225/45/R17

Stock Sport (actual)

• Yokohama Neova AD07 LTS - Directional
  
  Front 175/55 R16
  Rear 225/45/R17

Stock Sport (alternative)

• Yokohama A048 Ultra High Performance
  
  Front 195/50/R16
  Rear 225/45/R17

Possible Summer Tires (Sport/Non-Sport)

• Toyo Proxes R888
  
  Front 195/50/R16 84W
  Rear 225/45/R17 94W RD
  100 wear rating

• *DISCONTINUED* Toyo Proxes T1R
  
  Front 195/50/R16 84V part# 245740
  Rear 225/45/R17 94Y RD part# 245600
  280 wear rating

• Toyo Proxes 4
  
  Front 195/50/R16 88V
  Rear 225/45/R17 94W
  300 wear rating

Possible Winter Tires (Sport/Non-Sport)

• Pirelli Snowsport
  
  Front 195/50/R16 84H at 25 PSI (172 kPa) (Pirelli 210 Snowsport)
  Rear 225/45/R17 91H at 36 PSI (248 KPa) (Pirelli 240 Snowsport)

• Yokohama W.drive, Yokohama Yokohama
  
  Front 195/50/R16 H 88
  Rear 225/45/R17 H 91

• Bridgestone Blizzak LM25
  
  Front 195/507R16 84H
  Rear 225/45/R17 91H RFT

• Hankook W300 Icebear
  
  Front 195/50/R16
  Rear 225/45/R17

• Continental extreme Contact DWS
  
  Front 195/50/16
  Rear 225/45/17

Missing some tires? Drop me a PN and I'll add them.

[suxxer]

Spare space.

[tennis_trs]

I'm pretty sure that on the 2.0 Sport (USA model at least) the standard tires were the 048 and you could optionally "downgrade" to the 07 (this is what I did).

[suxxer]

According to TEG in this thread some Sports come with AD07s (the downgrade option?).

I would prefer the AD07 over the A048 cause the A048s are loud as hell (especially in a virtually silent car...). What a mistake to fit them on a Telsa... If only the Ad08 were available in Roadster size - they are just a dream. Check this Article about the AA08s compared to the AD07s

[TEG]

Thanks for crediting me for finding that chart.

The A048 are "sticky as hell" in warm dry conditions though. ( If you want extreme summer performance. )
But they don't last very long. They are practically track tires, so I can see how some would prefer the AD07 even on the sport model.

[dsm363]

It doesn't make any sense that the AD08s don't come in the same sizes as the AD07s. I e-mailed Yokohama and got a response saying the simply don't make the front tire size for the AD08s.

I went to Yokohama's website and sent them an e-mail. I doubt it'll make a difference but maybe if enough people contact them they'll produce the AD08s in 175/55R16 size. Even if they only produced a single batch, people could store them in their garage (front tire size at least).

[kgb]

I installed Hoosier A6 205 wide front tires (20 psi). Stock front is a 195. No clearance issues. Stock size Hoosier A6 rear tires (22 psi).

This is from personal correspondence from Roger Reid for his Roadster Sport... but he also mentions it in one of the autocross results threads.

[tennis_trs]

...
But they don't last very long. They are practically track tires, so I can see how some would prefer the AD07 even on the sport model.

That was my thinking in downgrading to the AD07s on my Sport.
With them I'm replacing the rears twice a year; the 048s would probably more than double that rate.

[Jaff]

I've had my Roadster Sport about 3 weeks now...I opted to go with the AD07's rather than the A048's simply because I will be using my Roadster to drive to work...I don't have the luxury of only using it in fair weather so I felt that I needed to include wet weather performance that the A048's probably wouldn't provide.

It is my understanding (I asked about them) that the AD08's have not yet been approved for use on the Roadster (probably as dsm posted due to improper sizing at this point in time.)

I've swapped the rims & 07's for the standard rims & Hankook's for winter driving.

[tennis_trs]

... Check this Article about the AA08s compared to the AD07s

...

From the above link

In addition to improving the technical aspects of the Advan Neova tire range, Yokohama also improved some of the retail shortcomings of the AD07. While the AD07 was standard stock for some of the world’s best performance cars – including names like Audi and Lotus – its aftermarket uses were limited due to very few sizes being offered. That won’t be the case for the AD08, however, as it will be available in 32 sizes, ranging from 15 to 19 inches.

They added sizes but didn't keep all of the AD07 sizes, including one of the ones we care about?

At the same link it says:

...the new AD08 were design with a new micro silica compound called Hyper Density Carbon, or HDC for short....The only real downside – if you can call it that – to HDC is that it can’t be used in temperatures below -14 degrees Fahrenheit, but we doubt this will be a factor for anyone shopping a high-performance tire.

Tirerack.com shows the minimum temperature for both 07 and 08 as 14 (not -14) degrees Fahrenheit:

Yokohama's care instructions specify that due to its compound characteristics, ADVAN Neova tires must be used and stored at temperatures above -10 degrees Celsius (14 degrees Fahrenheit) to maintain its performance and avoid tire damage.

From
http://www.tirerack.com/tires/tires....VAN+Neova+AD08
http://www.tirerack.com/tires/tires....VAN+Neova+AD07