Hoosier A7 fitments - LotusTalk - The Lotus Cars Community
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 23 (permalink) Old 03-25-2015, 12:17 PM Thread Starter
Autoxer
 
ABQautoxer's Avatar
 
Join Date: Apr 2011
Location: Albuquerque, NM
Posts: 85
Hoosier A7 fitments

I'm just now starting to spec out some tires (and probably wheels) for SSP. I'm curious who's used A7s already and can comment about fitment, especially within stock clams. I'm not willing to cut and everyone says the A7 runs quite a bit wider than the A6. I'm hoping I can make 225/245 work under my Exige clams.

07 Exige S - Chrome Orange
SCCA/PCA autoxer
ABQautoxer is offline  
Sponsored Links
Advertisement
 
post #2 of 23 (permalink) Old 03-25-2015, 02:53 PM
RBH
Registered User
 
RBH's Avatar
 
Join Date: Oct 2010
Location: Northern VA
Posts: 2,201
I just ordered the R7s and it will be here next week. The front R7 was just released as they had a few left over of the R6s. I am going to use (Wheel Spacers (.190"/ 4.8mm) )

Do it once. Do it right.
RBH is offline  
post #3 of 23 (permalink) Old 03-25-2015, 03:36 PM
Tire abuser
 
jefrac's Avatar
 
Join Date: Apr 2012
Location: DFW
Posts: 772
Garage
Quote:
Originally Posted by ABQautoxer View Post
I'm just now starting to spec out some tires (and probably wheels) for SSP. I'm curious who's used A7s already and can comment about fitment, especially within stock clams. I'm not willing to cut and everyone says the A7 runs quite a bit wider than the A6. I'm hoping I can make 225/245 work under my Exige clams.
Proceed with caution.... I was at the track the weekend that EricH had the issues described in this thread.

https://www.lotustalk.com/forums/f91/...ubbing-266482/

He was not able to get a 245 width R7 to work on his Exige, even with spacers. Take special note of post #6 . Phil has VERY extensive experience with the Elige. If anyone could figure out a way to make them work, Phil would. Also, his car has the power to make use of the biggest tire out there. Good luck with it!

'06 Arctic Silver Elise | Touring |Traction Control |Supercharged | ST exhaust | Nitron singles | BWR anti-sway bar | RTD brace | V2 Arms | SS brake lines | Harness bar and Schroth harnesses | sys.6.pack |shifter reinforced | Ultralite lines | cup air box | Sport inserts | DBW Pedals | TALLrails | Team Dynamics 1.2's | TOC Oil Pan | ProRad | FW Torque tune | BOE surge tank and catch can | Radium Clam Kit
jefrac is offline  
 
post #4 of 23 (permalink) Old 03-30-2015, 03:24 PM Thread Starter
Autoxer
 
ABQautoxer's Avatar
 
Join Date: Apr 2011
Location: Albuquerque, NM
Posts: 85
Auto notification fail on my part.

Thanks for the link Jefrac, that confirms what I was thinking is that I would simply be running 205/225 in the A7. I might be able to run 225 square (15/17) but not sure I want to experiment with that quite yet.

07 Exige S - Chrome Orange
SCCA/PCA autoxer
ABQautoxer is offline  
post #5 of 23 (permalink) Old 03-30-2015, 06:00 PM
Tire abuser
 
jefrac's Avatar
 
Join Date: Apr 2012
Location: DFW
Posts: 772
Garage
Quote:
Originally Posted by ABQautoxer View Post
Auto notification fail on my part.

Thanks for the link Jefrac, that confirms what I was thinking is that I would simply be running 205/225 in the A7. I might be able to run 225 square (15/17) but not sure I want to experiment with that quite yet.
Post up how they work on your car and include video of your FTD's !

'06 Arctic Silver Elise | Touring |Traction Control |Supercharged | ST exhaust | Nitron singles | BWR anti-sway bar | RTD brace | V2 Arms | SS brake lines | Harness bar and Schroth harnesses | sys.6.pack |shifter reinforced | Ultralite lines | cup air box | Sport inserts | DBW Pedals | TALLrails | Team Dynamics 1.2's | TOC Oil Pan | ProRad | FW Torque tune | BOE surge tank and catch can | Radium Clam Kit
jefrac is offline  
post #6 of 23 (permalink) Old 03-31-2015, 08:03 AM
RBH
Registered User
 
RBH's Avatar
 
Join Date: Oct 2010
Location: Northern VA
Posts: 2,201
After seeing the 245 R7s at the shop next to the old R6s I have decided to go with P225/45ZR17 + 4.8mm wheel Spacers.

Do it once. Do it right.
RBH is offline  
post #7 of 23 (permalink) Old 03-31-2015, 08:11 AM Thread Starter
Autoxer
 
ABQautoxer's Avatar
 
Join Date: Apr 2011
Location: Albuquerque, NM
Posts: 85
Quote:
Originally Posted by jefrac View Post
Post up how they work on your car and include video of your FTD's !
It might be awhile. Had some set backs on the house I'm buying this month and so I'll be running the ES MR2 Spyder a bit longer for most events. I'll run the Exige as is for PCA (NT01s) until my budget opens back up.

07 Exige S - Chrome Orange
SCCA/PCA autoxer
ABQautoxer is offline  
post #8 of 23 (permalink) Old 04-01-2015, 09:02 AM
RBH
Registered User
 
RBH's Avatar
 
Join Date: Oct 2010
Location: Northern VA
Posts: 2,201
Here is a pic for visualization. The R6 245 is almost the same size as the R7 225. The R7 245 is massive.


Do it once. Do it right.
RBH is offline  
post #9 of 23 (permalink) Old 04-01-2015, 11:24 AM
Registered User
 
glagola1's Avatar
 
Join Date: Apr 2012
Posts: 1,181
Looks like the used tire could have benefited from a bit more neg camber.
glagola1 is offline  
post #10 of 23 (permalink) Old 04-02-2015, 01:29 PM Thread Starter
Autoxer
 
ABQautoxer's Avatar
 
Join Date: Apr 2011
Location: Albuquerque, NM
Posts: 85
Quote:
Originally Posted by RBH View Post
Here is a pic for visualization. The R6 245 is almost the same size as the R7 225. The R7 245 is massive.
Awesome thanks, confirms the 225 rears for me. Anyone have pics of the new 225/45/15 A7/R7 vs the A6/R6?

07 Exige S - Chrome Orange
SCCA/PCA autoxer
ABQautoxer is offline  
post #11 of 23 (permalink) Old 05-04-2015, 09:49 PM
Registered User
 
Join Date: Aug 2008
Location: Bellevue, WA
Posts: 425
Welp, I have a set of 275/35/15 and 275/35/17 A7s on their way to my tire guy. I'll be able to compare vs the A6s shortly here. On one hand, wider sounds nice. On the other hand, I'm not sure I need any more rubbing up front.

David de Regt - Bellevue, WA
codingparadox is offline  
post #12 of 23 (permalink) Old 05-04-2015, 10:02 PM
Plug Whisperer
 
turbophil's Avatar
 
Join Date: Dec 2005
Location: Kansas City/ Overland Park
Posts: 6,298
The 275s didn't get much of a change in width when compared to the 245 and 225s. I've already got a pallet of 275 A7s and they're real close to the old 245 A6s... As mentioned, not so with the 225s and 245s. Those two tires grew to the widest DOT spec just like BFGs did some years back... It's just a catch up game for hoosier's specs as far as I can tell...


RBH, what tire temps are you running at the track to require the use of Rs rather than As?

-Phil


Phil: NASA 2012 and 2014 TT1 Central Champion, 2005 GG Elige, Rev400, 485+whp REV X

2011 Pearl White Evora, BOE Skunk Works 6 SPD 435WHP || 2014 Black Evora Skunk Works IPS 390WHP|| 2011 White Evora Skunk Works IPS 390WHP || 2006 CO Elise, Rev400, Steet Car

____________________________________________

www.boefab.com: We Build Champions | Products-Service-Advice


BOE ClamHinge | BOE TVS SuperCharging, The Most Powerful Track-Worthy Forced Induction | EFI Engine Management | BOE The Essential Fuel Starve Solution| BOE Lotus Tow Package| BOE New-Tech Lotus Race Engines | The Right Oil Filter for Your Lotus | Custom Lotus ECU Tuning


Pain makes man Think. Thinking makes man Wise. Wisdom makes tracking a Lotus Endurable
turbophil is offline  
post #13 of 23 (permalink) Old 05-05-2015, 04:50 AM
Registered User
 
glagola1's Avatar
 
Join Date: Apr 2012
Posts: 1,181
Quote:
Originally Posted by codingparadox View Post
Welp, I have a set of 275/35/15 and 275/35/17 A7s on their way to my tire guy. I'll be able to compare vs the A6s shortly here. On one hand, wider sounds nice. On the other hand, I'm not sure I need any more rubbing up front.
The 275s are the same size... or very close to it. Unfortunately, I can't say if they drive any differently because I used them on a different surface with a different alignment, different springs, and a different sway bar setting.

They now have 31 runs on them on a pretty abrasive surface and they are looking pretty meaty still.

Also, I wouldn't bother hoarding the A6 if you know what I mean.
glagola1 is offline  
post #14 of 23 (permalink) Old 05-05-2015, 05:15 AM Thread Starter
Autoxer
 
ABQautoxer's Avatar
 
Join Date: Apr 2011
Location: Albuquerque, NM
Posts: 85
Thanks for the feedback all, keep it coming.

Matt congrats on the Blytheville win.

07 Exige S - Chrome Orange
SCCA/PCA autoxer
ABQautoxer is offline  
post #15 of 23 (permalink) Old 05-05-2015, 05:36 AM
Registered User
 
Gunpilot's Avatar
 
Join Date: Jun 2012
Location: Enterprise AL
Posts: 4,098
Just put on a set of R7's 205/45 & 245/40 and drove at Road Atlanta this weekend. Those that know my car know it sits high but has been remedied with new Nitrons (as Phil says I got rid of that Rally look!). Heights are 125F and 130R. Have 4mm spacers all the way around. Slight amount of rubbing on the rear liners, other than that they performed admirably.

2012 Evora 2+0 IPS.
2007 Exige mental track toy.
2005 Elise.
1982 Brunette.

"Listen up, I ain't Captain Walker. I'm the guy who carries Mr. Dead in his pocket."

"CHARLIE DON'T SURF"
Gunpilot is offline  
post #16 of 23 (permalink) Old 05-05-2015, 05:39 AM Thread Starter
Autoxer
 
ABQautoxer's Avatar
 
Join Date: Apr 2011
Location: Albuquerque, NM
Posts: 85
Quote:
Originally Posted by Gunpilot View Post
Just put on a set of R7's 205/45 & 245/40 and drove at Road Atlanta this weekend. Those that know my car know it sits high but has been remedied with new Nitrons (as Phil says I got rid of that Rally look!). Heights are 125F and 130R. Have 4mm spacers all the way around. Slight amount of rubbing on the rear liners, other than that they performed admirably.
Stock clams or cut/flared?

07 Exige S - Chrome Orange
SCCA/PCA autoxer
ABQautoxer is offline  
post #17 of 23 (permalink) Old 05-05-2015, 05:43 AM
Registered User
 
Gunpilot's Avatar
 
Join Date: Jun 2012
Location: Enterprise AL
Posts: 4,098
Stock.........

2012 Evora 2+0 IPS.
2007 Exige mental track toy.
2005 Elise.
1982 Brunette.

"Listen up, I ain't Captain Walker. I'm the guy who carries Mr. Dead in his pocket."

"CHARLIE DON'T SURF"
Gunpilot is offline  
post #18 of 23 (permalink) Old 05-05-2015, 05:48 AM Thread Starter
Autoxer
 
ABQautoxer's Avatar
 
Join Date: Apr 2011
Location: Albuquerque, NM
Posts: 85
It sounds like you are running the stock wheels and this is on the 07 Exige? I'm wondering how they would do on 8" wide front and rear. You're the exact test fitment case I've been hoping to find

07 Exige S - Chrome Orange
SCCA/PCA autoxer
ABQautoxer is offline  
post #19 of 23 (permalink) Old 05-05-2015, 05:57 AM
Registered User
 
Gunpilot's Avatar
 
Join Date: Jun 2012
Location: Enterprise AL
Posts: 4,098
Yes on stock LSS wheels. That 225 will rub in front and you wont have full movement of your wheel, I tried it. Plus you have a front rake. With up springs I made it work but you sit high and it looks like ass. You can autox with it and track but cant turn the wheel all the way L or R.

For autox Fred Zust or Glag would be your best reference. They are the pros!

2012 Evora 2+0 IPS.
2007 Exige mental track toy.
2005 Elise.
1982 Brunette.

"Listen up, I ain't Captain Walker. I'm the guy who carries Mr. Dead in his pocket."

"CHARLIE DON'T SURF"

Last edited by Gunpilot; 05-05-2015 at 06:02 AM.
Gunpilot is offline  
post #20 of 23 (permalink) Old 05-05-2015, 06:10 AM
Registered User
 
glagola1's Avatar
 
Join Date: Apr 2012
Posts: 1,181
Thanks, Tom. It was a really fun event and I feel like I got lucky. Everybody had coned runs with times that could win. It's amazing how much luck is involved with a win.
glagola1 is offline  
Sponsored Links
Advertisement
 
Reply

  LotusTalk - The Lotus Cars Community > Motorsports > Solo timed events

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the LotusTalk - The Lotus Cars Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome