Tried out some 20" wheels today.

[AL427SBF]

Couldn't quite connect the dots on that brain teaser? Then go weigh mounted 15's versus 18's with the same width tire and final diameter, that's the point genius. Amazing you couldn't figure that out on your own lol.

[RodKnock]

Originally Posted by AL427SBF

Couldn't quite connect the dots on that brain teaser? Then go weigh mounted 15's versus 18's with the same width tire and final diameter, that's the point genius. Amazing you couldn't figure that out on your own lol.

Avon tire sizes for my Kirkham, per a posted recommendation from Tom Kirkham, would be 245/60-15 and 275/55-15. If I desired more rear tire, then I could go to a 295/50-15 for the rear.

It doesn't take a genius to figure out that bigger wheels mean MORE aluminum and bigger tires means MORE rubber, ergo MORE total weight. And the Law of Diminishing Returns (and appearance) would apply to the performance benefits, if any, of increasing wheel and tire sizes for the authentic-appearing Cobra replicas.

[RodKnock]

Originally Posted by AL427SBF

Couldn't quite connect the dots on that brain teaser? Then go weigh mounted 15's versus 18's with the same width tire and final diameter, that's the point genius. Amazing you couldn't figure that out on your own lol.

BTW, no self-respecting Cobra owner would ever install a 335/45-15 tire on their car, even if that size were available in 15's. Simply ridiculous and not even remotely in the universe of rational thought.

[henrik]

Originally Posted by AL427SBF

Couldn't quite connect the dots on that brain teaser? Then go weigh mounted 15's versus 18's with the same width tire and final diameter, that's the point genius. Amazing you couldn't figure that out on your own lol.

Troll - Pls leave this forum and go buy a 1974 mustang or a brand new race car

No need to talk dirty - it is you that have it all wrong with your lack of understanding to the cobra heritage.

this is a cobra forum for early 60' replicas - not some child forum for pointless discusions of weight on wheels...

[Ant]

Some of you guys just want to keep ramming modern technology in to your Cobra's, thats fine if that is what you want, problem is they rapidly don't fit in with the original concept and aren't accepted with racing organisations etc.

Here in NZ they won't even look at you for classic racing if you go bigger than 1" diameter over original 15" wheels. Most of you with your big wheels wouldn't get a look in racing against the well sorted original spec cars with 15" wheels. So saying how much better these low profile sidewall tires perform over higher profile tires isn't always the case when the flag drops.

When I see a Cobra or an older classic style vehicle with 18" and larger wheels, they just don't look right, and not what these cars are about. In fact cobra's with over 18" diameter wheels and larger just draw attention to the owner as a dickhead.

[henrik]

Originally Posted by Ant

Some of you guys just want to keep ramming modern technology in to your Cobra's, thats fine if that is what you want, problem is they rapidly don't fit in with the original concept and aren't accepted with racing organisations etc.

Here in NZ they won't even look at you for classic racing if you go bigger than 1" diameter over original 15" wheels. Most of you with your big wheels wouldn't get a look in racing against the well sorted original spec cars with 15" wheels. So saying how much better these low profile sidewall tires perform over higher profile tires isn't always the case when the flag drops.

When I see a Cobra or an older classic style vehicle with 18" and larger wheels, they just don't look right, and not what these cars are about. In fact cobra's with over 18" diameter wheels and larger just draw attention to the owner as a dickhead.

The rationale behind the 17" is the brakes... the 15" do not allow strong disk brakes - hence the compromise with halibrand style 17".

I have seen / and droved - old cars where the brakes got too hot = no stopping power at all

I live with the 17", but love the 15" - billboard or no billboard

IBTL

[Ant]

Originally Posted by henrik

The rationale behind the 17" is the brakes... the 15" do not allow strong disk brakes - hence the compromise with halibrand style 17".

I have seen / and droved - old cars where the brakes got too hot = no stopping power at all

I live with the 17", but love the 15" - billboard or no billboard

IBTL

Henrik,

I agree with your comments, raced my FE 427 Cobra on 15" wheels with the biggest brakes, special pads, air ducts etc and still ran out of brakes. My current 7 years build has 17" x 10" wheels 13" rotors, 6 pot AP Racing callipers front and rear 17 x 12" 12" rotors, AP 4 pot rear, I don't intend to run out of brakes and I can't be bothered with the limited selection of 15" tyres available here in NZ. Love the look of 15" wheels.