Discussion
HI lads need a bit of advice i have just got some new wheels for the griff the size is 16x8" fronts and 17 x8.50 rears what i need to know is can i put 225/50/16 tyres on the front or do i put 225/45/16 on the back i would like to put on 255/45/17s as the rear wheel wheels are 8.50 wide but might go to 245/45/17 can someone tell me which is the way to go as idon,t want wheels snagging on anything manythanks in advance paul
I have 225's on the front and 255's on the rear. I had to shave in inner rear wheel arches to fit them in though. The wheel offsets are what define how we'll they fit plus how square the tyre shoulders are. Road tyres are rounded but b list tyres like r888's and kuhmo v60's are vey square and my bind under heavy cornering. HTH jes
paul2000 said:
HI lads need a bit of advice i have just got some new wheels for the griff the size is 16x8" fronts and 17 x8.50 rears what i need to know is can i put 225/50/16 tyres on the front or do i put 225/45/16 on the back i would like to put on 255/45/17s as the rear wheel wheels are 8.50 wide but might go to 245/45/17 can someone tell me which is the way to go as idon,t want wheels snagging on anything manythanks in advance paul
Don`t know how different the Griff is but my 255/40/17`s caught on the near side outrigger and near side inner arch ..I did not mind modifyieing the arches but i was not willing to touch the outriggers so got rid and went back to 245/40/17`sThe outrigger on the nearside is a good 15mm closer ,a local TVR specialist said the Jigs were terrible
HI lads thanks for the info just one more thing why have you gone for 40/17 is it to allow for the wider tyre or something else ,sorry to be brain dead but i know which tyres i am putting on the rear 245/45/17 but the fronti am not to sure of i was thinking of putting 225/50 /16 on but looking at your tyre size i am not to sure ,have you gone for that size for the lower look or is there an other reason thanks again paul
The original front tyres on my Griff were 205/55/15, they have a nominal diameter of 605mm. 255/40/17 are around 635mm. Unless the ride height is raised I would think it inevitable they will rub the arches.
Most decent tyre manufactures show the Diameter, Section width, Tread width, optimum and permissible rim widths on their web sites. Choosing different wheels is more complex than it would first seem, you have to choose the wheel size, rim width and offset in combination with the tyre.
Have to confess I remain puzzled by the fashion for fitting larger rims with lower profile tyres because they “look better” I tend to prefer the original higher profile rubber on the road because it seems a lot nicer to drive. Each to his own I suppose. It is perhaps a different matter on the track where slicks or your 1b rubber of choice are only available in larger rim sizes
Most decent tyre manufactures show the Diameter, Section width, Tread width, optimum and permissible rim widths on their web sites. Choosing different wheels is more complex than it would first seem, you have to choose the wheel size, rim width and offset in combination with the tyre.
Have to confess I remain puzzled by the fashion for fitting larger rims with lower profile tyres because they “look better” I tend to prefer the original higher profile rubber on the road because it seems a lot nicer to drive. Each to his own I suppose. It is perhaps a different matter on the track where slicks or your 1b rubber of choice are only available in larger rim sizes
steve-V8s said:
Don’t understand that either
Was only tyring to help you understand why people put bigger rims on, but as you expanded upon my comment I would say plenty of Griff and Chimaera owners fit larger brakes and prefer them. If you're happy with the standard ones on your track-day rubber shod V8S that's also a valid choice. It's not a case of right or wrong. I think the secret is to get both front and rear wall heights close as possible ,this will make sure you end up with 1" difference to match the rim size difference.
I`ve seen people get it very wrong with eather much larger wall heights fitted eather front or rear .
It will look weird..
I would also find out what your standard tyre diameters are then try an match them cose as possible..
If you have 205/55/15 it will be around 606 diameter and the 225/50/16 will be close to 632mm
That is very cose to 1" difference to match the rims .
This helps http://www.alloywheels.com/Tyre_Calculator
A nice setup for 16 and 17" tyres are 225/45/16 or 215/45/16 , 225`s will ride better . For the rear 245/40/17 ,I your running 17" on the front i would go for 215/40/17.
I`ve seen people get it very wrong with eather much larger wall heights fitted eather front or rear .
It will look weird..
I would also find out what your standard tyre diameters are then try an match them cose as possible..
If you have 205/55/15 it will be around 606 diameter and the 225/50/16 will be close to 632mm
That is very cose to 1" difference to match the rims .
This helps http://www.alloywheels.com/Tyre_Calculator
A nice setup for 16 and 17" tyres are 225/45/16 or 215/45/16 , 225`s will ride better . For the rear 245/40/17 ,I your running 17" on the front i would go for 215/40/17.
Edited by SILICONEKID350HP on Sunday 10th February 21:02
RichB said:
steve-V8s said:
Don’t understand that either
Was only tyring to help you understand why people put bigger rims on, but as you expanded upon my comment I would say plenty of Griff and Chimaera owners fit larger brakes and prefer them. If you're happy with the standard ones on your track-day rubber shod V8S that's also a valid choice. It's not a case of right or wrong. 
RichB, Steve did say std brakes and slicks............have you any idea what he's runs up Gurston Down's Hill climb???
Deffo not a V8s, but a seriously well modified Griff of some considerable grunt -
Each to their own!!
Regardless, Steve said he didn't understand the trend for larger rims I gave him my thoughts. No I didn't know that he does hill climbs, and he didn't mention it so I don't see the point of your post, perhaps other than to perhaps sound "in the know" 
I could say that Neill Anderson assisted in the design of my set-up but again that would add nothing to the thread because as Steve said, each to their own. 
I could say that Neill Anderson assisted in the design of my set-up but again that would add nothing to the thread because as Steve said, each to their own. 
RichB said:
Regardless, Steve said he didn't understand the trend for larger rims I gave him my thoughts.
You didn't begin to answer his question though. There is a trend to fit larger rims for fashion and Steve asked why that was the case. You stated an engineering reason to fit larger rims which whilst valid is not applicable in most cases since people generally do not fit larger brakes or if they do they new brakes can fit in 16" wheels.I don't really think that it's difficult to understand, just depressing.
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