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TR7 V8

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Club Triumph forum - Cars - TR7-8 - TR7 V8 - Tyre size
< ST Triumph TR7 Plusparts and Pluspacs Tyre size Starter motor >
"Stuart Wilson"
posts: 810
Pendle & Pennine group
joined on Wed 9th Nov 2011
 posted Wed 25th Oct 2017

I've just got some 15" MGF Alloys to go on the TR, what size tyres are people using?

I'm thinking 185/55 or maybe a 195/50 ??

1982 TR7 FHC "Sprint"
Moss Roadster - upgrade now in progress
1985 Yamaha FZ750
1997 Vauxhall Calibra 2.5 V6 in need of a little TLC -- looking to sell it
2000 Porsche Boxster S -- mid life crisis?  
2004 Skoda Superb 1.9TDI 130 Auto
Vauxhall Nova 1.6 16v stage rally car - NOW SOLD
1988 Vauxhall Nova 1.2 merit NOW SOLD
You can never have too many toys!!
2012 RBRR  TR7 "Sprint" car 16 (completed)
2014 RBRR Moss Roadster car 72 (retired)
2016 RBRR Moss Roadster TR7 "Sprint" car 123 (completed)
2018 RBRR Moss or TR7 --- choices
Tags - TR7 TR7 Sprint TR7 V8 TR8
"cliftyhanger"
posts: 9912
North London & Herts group
joined on Wed 31st Oct 2007
 posted Thu 26th Oct 2017 reply 1 of 7

You will find the 195/50 are MUCH cheaper for the same tyre. So if they will fit, that is what I would use.

I have 185/55 on my toledo, and there is zero rear arch lip left after trimming, so I don't think I will get 195/50's to fit. Which is irritating!

Clive Senior

Location-Brighton, East Sussex
Foxy is here, Post Office red Toledo, bought in 2008 Slant 4 engine bolted in, sprint box and axle.
Ford powered Spitfire mkIV, on the road and an absolute hoot!
Tags - TR7 TR7 Sprint TR7 V8 TR8
"Howard"
posts: 1020
Cambridge group
joined on Tue 20th Nov 2007
 posted Thu 26th Oct 2017 reply 2 of 7

Since 2015 I have run CONTINENTAL PREMIUM CONTACT 5 185's tyres all round on my 7 which is fitted with MGF original style wheels with TR8 discs and Princess Calipers.

From 2008 I used PREMIUM CONTACT 2  with 205's fitted at the rear & 185's at the front which gave equally good handling, but on the poorer roads in Scotland during the RBRR the rear tyres occasionally rubbed the bodywork.

Road holding and handling has been totally satisfactory with both types & the car usally covers between 3 & 6k/year

 
Le Mans 2007, 08, 09, 10 & 11 
RBRR 2008(DNF), 10, 14, 16, 18
10CR 2009, 11, 13, 15, 17, 19
HCR 2008, Auto Ecosse 2012 

1981 Triumph TR7 / 2005 Suzuki Vitara / 2012 Renault (Dacia) Duster / 2018 Suzuki Vitara
Tags - TR7 TR7 Sprint TR7 V8 TR8
"chris2"
posts: 5
Cambridge group
joined on Mon 16th Nov 2015
 posted Thu 26th Oct 2017 reply 3 of 7

My tr7 had 185/55/15 front and 205/50/15 when I got  l changed then to 185/55/14 all round
I used tiresome. com tyre-size-calculator   to  check for the size diameter tyres for speed to revs and speedo my was about 1-2% out
Tags - TR7 TR7 Sprint TR7 V8 TR8
"Stuart Wilson"
posts: 810
Pendle & Pennine group
joined on Wed 9th Nov 2011
 posted Thu 26th Oct 2017 reply 4 of 7

I've found the 195/50 are a good bit cheaper, hopefully they will fit

1982 TR7 FHC "Sprint"
Moss Roadster - upgrade now in progress
1985 Yamaha FZ750
1997 Vauxhall Calibra 2.5 V6 in need of a little TLC -- looking to sell it
2000 Porsche Boxster S -- mid life crisis?  
2004 Skoda Superb 1.9TDI 130 Auto
Vauxhall Nova 1.6 16v stage rally car - NOW SOLD
1988 Vauxhall Nova 1.2 merit NOW SOLD
You can never have too many toys!!
2012 RBRR  TR7 "Sprint" car 16 (completed)
2014 RBRR Moss Roadster car 72 (retired)
2016 RBRR Moss Roadster TR7 "Sprint" car 123 (completed)
2018 RBRR Moss or TR7 --- choices
Tags - TR7 TR7 Sprint TR7 V8 TR8
"Beans"
posts: 5697
Netherlands
joined on Sun 5th Mar 2006
 posted Fri 27th Oct 2017 reply 5 of 7

How wide are the MG rims?
With 7"rims 195/55 or 205/50 are pretty close to the original 185/70-13 tyres.
In my car ('t Kreng) the speedo is spot on with these tyres. 195/0 are to small.

1976 TR7 FHC (currently undergoing some TLC ...)
1980 TR7 DHC (a.k.a. Kermette, my first car bought in 1988 )
1981 TR7 FHC (Sprint engined, a.k.a. 't Kreng)
http://tr7beans.blogspot.com/
Tags - TR7 TR7 Sprint TR7 V8 TR8
"Howard"
posts: 1020
Cambridge group
joined on Tue 20th Nov 2007
 posted Sat 28th Oct 2017 reply 6 of 7

Mine are 185/55/15 and the rolling circumference is very close to the original tyres - as Chris mentions its 1 - 2% out at most

H

 
Le Mans 2007, 08, 09, 10 & 11 
RBRR 2008(DNF), 10, 14, 16, 18
10CR 2009, 11, 13, 15, 17, 19
HCR 2008, Auto Ecosse 2012 

1981 Triumph TR7 / 2005 Suzuki Vitara / 2012 Renault (Dacia) Duster / 2018 Suzuki Vitara
Tags - TR7 TR7 Sprint TR7 V8 TR8
"vitessesteve"
posts: 2368
Website Administrator
Website Moderator
Isle of Wight group
joined on Mon 16th Oct 2006
 posted Sat 28th Oct 2017 reply 7 of 7

I run 205/50 on 15" wheels - no problem with clearances.

PLEASE help us to maintain a friendly forum, use Report post button if you see anything you are unhappy with. Thanks.
Steve Weblin - AKA vitessesteve Forum Moderator

Cars - Valencia Blue 69 Vitesse Mk2 Saloon since 1991 and a TR7 Sprint.

blog http://vitessesteve.blogspot.com/ website http://www.vitessesteve.co.uk/

Cowes, Isle of Wight, UK based - studied class car restoration at Leeds City College

https://www.facebook.com/stephen.weblin
Tags - TR7 TR7 Sprint TR7 V8 TR8


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