360 360 F1 wheels write up 18’s to 20’s weights profiles

So against mates recommendation I went to 20” challenge replicas over 19”. I though I would take some measurements & weights for others trying to make the decision. I also rolled the guards as i plan to lower the car slightly


Ferrari F1 360 20”challenge wheel replicas

Fronts 245/30/20 pirelli pzero
Rears 295/30/20 pirelli pzero

Wheels originally on car:

Fronts 225/40/18 pirelli pzero
Rears 295/30/18 pirelli pzero (on car when purchased) wrong tire size I know


Heights measured at side skirts front and rear (I have challenge stradale skirts but will give rough idea of change to 20’s. Keep in mind my rears were much smaller profile that standard. Speedo was out by about 10klm. When doing 60klm it reads 70.

Front height stock 18’s 146mm
Front height with 20’s 149mm
+3mm

Rear height with low profile 18’s 136mm
Rear height with 20’s 158mm
+22mm

Weights:

I decided to weigh wheels (inclusive of tyres) to see how much weight I added with the replicas. They are noticeably heavier.

Stock fronts : 19.5kg each
20” fronts: 23.6kg each
+4.1 kg
Stock rears: 24.6kg
20”rears: 27.1kg
+2.5kg

Total added weight
13.2kg

I have a aftermarket exhaust I’m adding that will shave off most of the weight as well as sparco seats so in theory will still end up negative of oem weight. I am keeping the 18’s also.

Waiting on Ferrari style wheel centers as the wheels have 68mm caps.

After giving the car a quick run on new wheels surprisingly they feel smoother and car feels nicer on the road. Go figure.... maybe because I had 30 series on the 18’s so rolling circumstances was way out. It did accelerate just slightly better on smaller diameter I guess if I were to get real picky but overall I like this more. I plan to drop 10mm in front and 15-20mm in rear.

Please drop some pics of your lowered 360 on 19’s and 20’s.

Thanks


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I know I know & I agree. More inertia : slower ride amongst other negatives
I was just keeping it simple with weights.
I can feel it in acceleration on the road also because my 18’s were running only a 30 series so much smaller than even stock.
As you said it’s really only for the roads and giving it abit of WOT now and then. Takes all but 20 minutes to swap to my factory wheels if I have a day planned thru the twisties [emoji6]