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zkhennings
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JAN 18, 10:58 AM
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The wheels I am looking at are about 17lbs for the 17x9 and 19lbs for the 18x9.5. I am sure the tires for the 18s would weigh more.
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cvxjet
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JAN 18, 12:56 PM
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My 16 x 7 wheels weigh 13-14 lbs each. The General G-Max Tires weigh 21 and 23 lbs each.
The super low-profile tires have some minor benefits at max performance- but the new cars have advanced suspension (Super light arms & spindles, electronic shock absorbers) so they can deal with all of the weight. Our Fieros do not have these advanced parts.
On a smooth track you may see a small difference in cornering performance and handling feel...But straight-line performance (Accel and braking) will suffer from the added (Rotational) weight.
On a non-smooth track or on regular roads, the heavy tire/wheel package, along with short sidewalls will make the car ride and handle like a truck.
Back in 2010-12, C&D did a test with a VW Golf- basically increasing the wheel diameter while staying with the same tire type. You will notice that the Accel' suffers from the bigger wheels, while there is an improvement in both braking and lateral G. But the 15 and 16 TIRES were narrower than the 17-19 wheel tires. So that would improve those performances but also should have HELPED the accel with better off-the-line traction. So going to some 225 wide 16" tires would probably have given the best all-around performance.
One last thing; Back in the 80s, my Comet GT was set up for handling (Shelby mod + shocks-stabilizer bars-alignment) My original wheels were 6 3/4" wide...while driving, I could wiggle the steering wheel and feel the car wiggling back and forth on those "Floppy" sidewalls- Later I found some 8" wide wheels, and the change was amazing- Wiggling the wheel, the car would change direction instantly (I did not (Always) bang my head against the window- but it was close!) What this means is that wheel WIDTH is more important than super-low sidewalls.[This message has been edited by cvxjet (edited 01-18-2023).]
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zkhennings
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JAN 19, 11:06 AM
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I would use the pretty much the same size tire asides from radius, the contact patch is longer with the taller wheel so it would be slightly larger, and I think that 18” rim would weigh slightly less than the stock lace rims. I think the tires would weigh similarly per width since they are very close to same OD as stock and 18” tire has less sidewall. I am not looking to run super skinny sidewalls, I don’t like that look, just trying to maximize contact patch while having everything fit as well as possible. The 18’s have a lower offset compared to the 17s and the diameter will help clear the knuckle. The 17” wheel and tire combo would end up being shorter than stock gt wheels and tire combo.
I will most likely end up going 17s due to tire prices going up like 100$ a tire from 17” to 18” rims, and I want to run a 200TW tire which won’t last long.
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pmbrunelle
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JAN 19, 07:45 PM
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| quote | | Originally posted by zkhennings:The 18’s have a lower offset compared to the 17s and the diameter will help clear the knuckle. The 17” wheel and tire combo would end up being shorter than stock gt wheels and tire combo. |
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A 17x9 with 38 or 40 mm offset will definitely clear an 84-87 knuckle:
https://www.realfierotech.c...php?p=159393#p159393
Provided the "DEFINITELY WILL TRIM" tabs are cut from the strut:
https://www.fiero.nl/forum/.../HTML/138710.html#p4
Also, for a more comfortable clearance, it would be preferred for the inner plane of stick-on wheel balancing weights to be located outboard of the strut.
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zkhennings
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JAN 20, 12:37 PM
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The wheels I am looking at for the rear +40 offset. Same for front but 17x8, also +40 offset. Nice and light, plenty of people use them for track wheels.
Great point with the wheel weights, thanks!
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ericjon262
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JAN 22, 05:08 PM
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I'm also running Enkei Kojins 18x8 35mm offset in the front, 18x9.5 45mm offset rear. Currently, the car has a stock 85 front suspension with Will's antidive setup, and 2" drop spindles, and the rear is an 88 cradle with rod end lateral links. I don't think these wheels will be on it anymore after my next round of brake/chassis mods.
| quote | Originally posted by zkhennings:
The wheels I am looking at for the rear +40 offset. Same for front but 17x8, also +40 offset. Nice and light, plenty of people use them for track wheels.
Great point with the wheel weights, thanks!
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those will look great. i look forward to seeing them on the car.
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"I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."
I invited Lou Dias to trash me in my own thread, he refused. sorry. if he trashes your thread going after me. I tried.[This message has been edited by ericjon262 (edited 01-22-2023).]
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