Triumph Sports Cars

engine swaps and other performance upgrades, plus "factory" V8s (Stag and TR8)

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MGBV8
Carl Floyd
Kingsport, TN
(3922 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

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TR6 wheel/tire combo?
Posted by: MGBV8
Date: October 29, 2008 10:17AM

Just out of curiosity, what is the biggest streetable wheel/tire combo for the front of a TR6?


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1150 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

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Re: TR6 wheel/tire combo?
Posted by: 74ls1tr6
Date: October 29, 2008 10:32AM

I'm running 15"x 7" rims with a 245- 60- 15 tire . I have a little rub in the front inner fender which I will make the room. The top suspension by the ball joint where most people will have with rub, I have 1/4" clearance. What ever that offset might be I don't know. This is without any spacer and stock hub.I'm sure with low profile tire you could go larger. Jim Prettyleaf has 8" wide tire.

Calvin


alana
alan atkinson
10567
(232 posts)

Registered:
06/19/2008 08:06PM

Main British Car:
68 TR250 LS2

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Re: TR6 wheel/tire combo?
Posted by: alana
Date: October 29, 2008 11:14AM

I have 16x7 Panasports on there - but then I'm only running 215/60R16s on a 1" lowered suspension. Stock wheels have a zero offset, and 0 to + 6mm works pretty well. Personally I'd love to swap to 17's - I'm fairly sure it would get rid of my rub at lock. Finding a set of fronts that don't need spacers and use the stock bolt pattern is challenging though.

I'm pretty sure that you can fit low profile tires on 18's if you redrill the hubs. At that point, 8" wide and no rub might be possible.
Of course with spacers and flares, the sky is the limit.


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1150 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

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Re: TR6 wheel/tire combo?
Posted by: 74ls1tr6
Date: October 29, 2008 10:25PM

Correction, Jim Prettyleaf is running 8.5 wide tires all the way around, but they are slicks.

I was able to get this photo at the 2008 Triumphest in lake Tahoe.


Alan check his autocross car out here. [www.britishv8.org]


Triumphest 2008 133.jpg

Calvin


alana
alan atkinson
10567
(232 posts)

Registered:
06/19/2008 08:06PM

Main British Car:
68 TR250 LS2

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Re: TR6 wheel/tire combo?
Posted by: alana
Date: October 30, 2008 08:41AM

I saw the car - was looking at the back end setup - but I missed the wheel width.
How on earth does he fit them in there without spacers?
He must have spent ~ages~ with a grinder - 15x7 rub like crazy stock, so I can only imagine...


TR6-6SPD
Ken Hiebert
Toronto Ontario
(247 posts)

Registered:
04/23/2008 11:43AM

Main British Car:
1972 TR6 1994 5.7 L GM LT1

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Re: TR6 wheel/tire combo?
Posted by: TR6-6SPD
Date: October 31, 2008 09:01AM

Carl,

I can't tell you what is the biggest streetable wheel/tire combo for the front of a TR6 but I can tell you what I'm running on the street at this time. Previously I had 215/60/15 fronts and 225/70/15 rears. Now it's 245/45/17's on all four corners. On the street, I'll have to say this has improved the car's manners immensely. On the track, I don't know yet but I'm itching to find out.

http://i488.photobucket.com/albums/rr246/dynobeast/IMG_0256.jpg

As for clearance with the front tire, there's not a lot but enough. No rubbing, however I did already increase my turning radius with the previous wheel/tire combo by increasing the size of the "vertical link stop". The car has standard length performance springs but has been lowered using modified lower control arms. On a TR6, your biggest obstacle with fitting a larger rim is the upper ball joint and control arm. Anything smaller than 17" and you have a direct hit depending of course on the offset of the rim. With the 15x7' Mustang Turbine rims I had on previously,I had to use a 3/4" spacer to clear the ball joint. That spacer has now been eliminated. These rims just fit over the ball joint after a little massaging with the grinder. Incidentally, these are 17x8", 15mm offset, 5.09" backspace Cobra R's. Because the rim fits in tighter,the tire is still inside the fender.



Edited 1 time(s). Last edit at 12/12/2008 11:38AM by TR6-6SPD.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5920 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

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Re: TR6 wheel/tire combo?
Posted by: BlownMGB-V8
Date: October 31, 2008 09:18AM

Nice job Ken, and better yet, it looks good. That's similar to what I've been working on with the MGB-Roadmaster's wheels and tires. The 17's on the rear let the rim clear the lower upright pivot and carry more tire to the inside. Helps clear the tie rod ends on the front too.

Jim



TR6-6SPD
Ken Hiebert
Toronto Ontario
(247 posts)

Registered:
04/23/2008 11:43AM

Main British Car:
1972 TR6 1994 5.7 L GM LT1

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Re: TR6 wheel/tire combo?
Posted by: TR6-6SPD
Date: October 31, 2008 09:20AM

http://i488.photobucket.com/albums/rr246/dynobeast/IMG_0257.jpg

http://i488.photobucket.com/albums/rr246/dynobeast/IMG_0258.jpg

I ended up with these wheels because the hubs were already drilled to a Ford 4x 4.125 bolt pattern. That can limit your choices.

http://i488.photobucket.com/albums/rr246/dynobeast/IMG_0241.jpg

What do I think is the largest wheel/tire combo? I'm on the the outer limits now with the 17x8" rim. To get a larger rim would mean either being outside the fender or more backspacing. Then you'd have to go to an 18 or 19" rim. Largest tire? 245/45 is the standard for an 8" rim. You could go bigger if you raised the suspension.

If any one needs further details on measurements or wheel suppliers, I'd be happy to share my research.

Ken


TR6-6SPD
Ken Hiebert
Toronto Ontario
(247 posts)

Registered:
04/23/2008 11:43AM

Main British Car:
1972 TR6 1994 5.7 L GM LT1

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Re: TR6 wheel/tire combo?
Posted by: TR6-6SPD
Date: October 31, 2008 09:27AM

Jim,

Thanks for that. Of course a larger rim can open up the possibility of showing off a big Wilwood brake upgrade!


MGBV8
Carl Floyd
Kingsport, TN
(3922 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

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Re: TR6 wheel/tire combo?
Posted by: MGBV8
Date: October 31, 2008 10:35AM

Quote:
what is the biggest streetable wheel/tire combo for the front of a TR6?

Actually, I posed this question for Ken.

Not knowing much about Triumphs, I was concerned about his front/wheel tire choice. Looks like he found out they work AND they look awesome!


Jim,

Now you know what to get Brother Dan for Christmas. :)


dwtr6v8
Don Watson
West Virginia
(288 posts)

Registered:
12/07/2007 07:45AM

Main British Car:
1974 TR6 Ford 5.0 HO

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Re: TR6 wheel/tire combo?
Posted by: dwtr6v8
Date: October 31, 2008 08:23PM

WOW!

Kenny, That's the way to go! Put some Bling on that ride!

Here is a shot before and after.
b4after.jpg

What a difference!

Congrats!


TR6-6SPD
Ken Hiebert
Toronto Ontario
(247 posts)

Registered:
04/23/2008 11:43AM

Main British Car:
1972 TR6 1994 5.7 L GM LT1

authors avatar
Re: TR6 wheel/tire combo?
Posted by: TR6-6SPD
Date: October 31, 2008 09:18PM

Don, you always make me laugh and you're so creative with that computer!

Ken


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1150 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

authors avatar
Re: TR6 wheel/tire combo?
Posted by: 74ls1tr6
Date: October 31, 2008 09:52PM

Those rims and tires did change the looks of your ride Ken. You would think it was a different car altogether.

Very Nice Look! That's what I call "Blinging Eye Candy" Very nice choice. Now I know why you said your heart was a thumping
:-).

Calvin


MGBV8
Carl Floyd
Kingsport, TN
(3922 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: TR6 wheel/tire combo?
Posted by: MGBV8
Date: October 31, 2008 11:01PM

It will drive like a different car. I drove the before car. Watch the end of this video for the before car (not me driving) ;)




rwrooks
Rob Rooks
Boston
(5 posts)

Registered:
05/31/2015 01:13PM

Main British Car:
76 TR6 BMW 3.2L I6

Re: TR6 wheel/tire combo?
Posted by: rwrooks
Date: January 19, 2016 09:31PM

I am deciding on a tire size and considering 225x55x17. I calculate this to be 8.86" wide with a diameter of 26.74 (stock diameter=26.6 according to Moss)
I'd like feedback on how this tire size would fit. My suspension is slightly lower than stock height with springs and spacers from R Good.
I'm also hoping that a 17" Rota RB wheel clears the upper ball joint as Don Watson mentions in his earlier post.
Don W, your 245X45x17 are almost an inch wider but also 1" small diameter. Would you guess I'm safe with this size?
Thoughts on needing spacers? The wheels are 17X7.5 4x114.3 +4 so the offset of 4 as apposed to 0 may make this difficult.

Thanks for any feedback!
Rob



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