Konig Ampliform - New Flow Formed Wheel!

[Brian]

Your stock 17x7 wheel is a bit over 17 pounds. Thus the 6UL is dropping a few pounds and will have the best ride, the Ampliform is about a push on weight compared to stock but wider. The wider wheel will support sidewall more, so when all other things are equal, the Ampliform will ride stiffer because of more sidewall support with benefit of giving a lot more stability in the corners for the same tire size. Most going with 17x8 go with 225/45 or 235/40. I seem to recall that tire choice of yours comes in 225/45. Yes, slightly tall but many have posted pics at Miata.net, perhaps have a look. I currently have 225/45/17 on wife's 17x8 Tungsten 6UL on her Supercharged RF.

[Brian]

Customer added the RED Stripe, love the impact it makes with our Wilwood Calipers.

[KurtH460]

Your stock 17x7 wheel is a bit over 17 pounds. Thus the 6UL is dropping a few pounds and will have the best ride, the Ampliform is about a push on weight compared to stock but wider. The wider wheel will support sidewall more, so when all other things are equal, the Ampliform will ride stiffer because of more sidewall support with benefit of giving a lot more stability in the corners for the same tire size. Most going with 17x8 go with 225/45 or 235/40. I seem to recall that tire choice of yours comes in 225/45. Yes, slightly tall but many have posted pics at Miata.net, perhaps have a look. I currently have 225/45/17 on wife's 17x8 Tungsten 6UL on her Supercharged RF.

Ok Brian,
So stock weight is ~17lbs for wheel and 19lbs for tire for 36lbs total. So, gonna have to be the 6UL at ~14.7lbs, and then if I do go with the MSS4S at 22 lbs, that'll put me at a wash on weight at ~36.7lbs...thenthe brakes will have to be the unspring weight winner for me!!
What's your thought on this? The MSS4S has a 0.2" taller sidewall, which in theory should give a bit more "compliant" flex...along with putting it on an 8"rim instead of the recommended 8.5" rim, should also mean a bit more flex (range of fitment is 8.0-9.5").

Am I wrong in this thinking??

I really want the MSS4S, BUT am willing to rethink a different tire, but the 235/40s are limited. I don't really want a 225 though.

I should mention, this is my wife's car..and a s**t fit will occur if I decrease her love of her Miata!! She has sanctioned the BIG RED BRAKES..AND wants bigger wheels..but must keep her comfortable too! I want sway bars, exhaust, and S/C also so keeping her happy will get me more mods with less resistance


Thanks Brian!!
Kurt

[Brian]

I should say for those reading along it is stock ND Miata that has 17x7 just over 17 pounds, stock Abarth 17x7 is very heavy at 22 pounds. New GT 17x7 is alleged to be more like the Miata light OEM 17x7 but have yet to weigh one here. Stock ND Club optional BBS rim is a bit over 15 pounds.

[KurtH460]

Brian,
I don't think my response loaded, so I'll say again, GREAT info there for anyone wanting to wheel mod their NDs, etc!!
I'll be contacting you this week to start my long list of mods!!
Thank you, Kurt

[ShamirM072]

Hi Brian- getting ready to pull the trigger on these for my ‘12 PRHT, and wanted to make sure the 17x8 +40 offset with 215/45 Michelin PSS would fit without rubbing. I’m on coilovers with a height of 13.25”F/13.5”R. This is a daily driver with no track or autocross use, but spirited canyon runs are frequent. I may go up to 225/45 in the future, so I’d want to know if I’d need to do any fender rolling. Thanks!

[KurtH460]

Brian,
Near the top of this post, you have a post with two pics of a ND RF LE Grey Metallic with Ampliform Dark Metallic Graphite 17x8s. The tires appear to be Bridgestone RE-71R...that I can't quite be sure say 245/40R17 (???)
Are the tires 245/40R17s (??)
And, if so, are those rims 17x8s (??)
Thanks Brian!!
Kurt

[Brian]

Brian,
Near the top of this post, you have a post with two pics of a ND RF LE Grey Metallic with Ampliform Dark Metallic Graphite 17x8s. The tires appear to be Bridgestone RE-71R...that I can't quite be sure say 245/40R17 (???)
Are the tires 245/40R17s (??)
And, if so, are those rims 17x8s (??)
Thanks Brian!!
Kurt

Not a choice we recommend. We autocross/track on 17x9 with 245/40 and when the tires get old and slow we put them out to pasture as street junk tires mounted on whatever wheels we need pictures. So, indeed 245 is pinched onto 17x8 but I would not do that if we didn't have 'free' tires that were otherwise ready to toss and yet have enough grip for some fun miles around town. Pinching them onto 17x8 makes them ride softer than they would, giving up a lot of crispness in the turns but such a good tire even mostly worn out that it still works well enough for our street fun.

[Brian]

Hi Brian- getting ready to pull the trigger on these for my ‘12 PRHT, and wanted to make sure the 17x8 +40 offset with 215/45 Michelin PSS would fit without rubbing. I’m on coilovers with a height of 13.25”F/13.5”R. This is a daily driver with no track or autocross use, but spirited canyon runs are frequent. I may go up to 225/45 in the future, so I’d want to know if I’d need to do any fender rolling. Thanks!

That should work, the Michelin is not over the spec like some race tires.

[Brian]

Bronze Ampliform on NC Miata
Pictures Courtesy Customer Shamir Merino‎